<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	xmlns:media="http://search.yahoo.com/mrss/" >

<channel>
	<title>#Thermodynamique &#8211; Science Physique et Chimie</title>
	<atom:link href="https://science-physique.com/tag/thermodynamique/feed/" rel="self" type="application/rss+xml" />
	<link>https://science-physique.com</link>
	<description>Site web d&#039;exercices corrigés de sciences-physiques</description>
	<lastBuildDate>Sun, 16 Jun 2024 10:52:52 +0000</lastBuildDate>
	<language>fr-FR</language>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	<generator>https://wordpress.org/?v=6.9.4</generator>
	<item>
		<title>Exercices corrigés sur les Gaz parfaits</title>
		<link>https://science-physique.com/exercices-corriges-sur-les-gaz-parfaits/</link>
		
		<dc:creator><![CDATA[WikiPhysaca78]]></dc:creator>
		<pubDate>Sun, 16 Jun 2024 10:49:17 +0000</pubDate>
				<category><![CDATA[Terminale S]]></category>
		<category><![CDATA[#gaz_Parfait]]></category>
		<category><![CDATA[#Thermodynamique]]></category>
		<guid isPermaLink="false">https://science-physique.com/?p=1151</guid>

					<description><![CDATA[<p>Lire plus</p>
<p>L’article <a rel="nofollow" href="https://science-physique.com/exercices-corriges-sur-les-gaz-parfaits/">Exercices corrigés sur les Gaz parfaits</a> est apparu en premier sur <a rel="nofollow" href="https://science-physique.com">Science Physique et Chimie</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div id="scien-855361801" class="scien-avant-le-contenu_2 scien-entity-placement"><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2020519711053211"
     crossorigin="anonymous"></script>
<ins class="adsbygoogle"
     style="display:block"
     data-ad-format="autorelaxed"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="6175639843"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div id="scien-954502496" class="scien-avant-le-contenu scien-entity-placement"><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- ADAPTABLE -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="5811891285"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div class="post-views content-post post-1151 entry-meta load-static">
				<span class="post-views-icon dashicons dashicons-chart-bar"></span> <span class="post-views-label">Post Views:</span> <span class="post-views-count">817</span>
			</div><h2><span style="font-family: arial, helvetica, sans-serif; font-size: 20px;"><strong>La température  : La température représente l&#8217;énergie d&#8217;agitation des entités chimiques du milieu considéré. Dans la pratique, la température d&#8217;un milieu est repérée par un thermomètre.</strong></span><br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 20px;"><strong>Son unité dans le système international est le kelvin (K). Elle est reliée à la valeur en degré Celsius par : <i>T</i>(K) = <i>T</i>(°C) + 273,15.</strong></span><br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 20px;"><strong>Le zéro absolu, exprimé en kelvin. Elle correspond à la plus petite valeur que peut prendre la température soit 0 K = −273,15 °C.</strong></span></h2>
<p><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">Le modèle et la loi des gaz parfaits : Le <strong class="idocImportant">modèle du gaz parfait</strong> suppose que les atomes ou les molécules qui le composent sont très petits comparativement à la distance moyenne qui les sépare (et qu&#8217;on appelle distance intermoléculaire moyenne) : ils sont donc considérés comme étant <strong class="idocImportant">ponctuels</strong>.</span><br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">De plus, en dehors des chocs lorsqu&#8217;elles se rencontrent, ces particules n&#8217;interagissent pas puisqu&#8217;elles n&#8217;exercent <strong class="idocImportant">aucune interaction à distance</strong>.</span><br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">La <strong class="idocImportant">loi des gaz parfaits</strong> est une équation d&#8217;état qui relie les différentes grandeurs thermodynamiques d&#8217;un gaz considéré comme parfait. Elle s&#8217;écrit de la façon suivante : </span><span style="font-size: 20px;"><strong><span style="font-family: arial, helvetica, sans-serif;"><i>PV</i> = <i>n</i> R<i>T</i></span></strong></span><br />
<span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">Avec :</span></p><div id="scien-1480858543" class="scien-contenu_2 scien-entity-placement"><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2020519711053211"
     crossorigin="anonymous"></script>
<!-- DISPLAY1 -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="7680293209"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div id="scien-4158111451" class="scien-contenu scien-entity-placement"><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- ADAPT4 -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="6601900481"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script></div>
<p class="idocBlock"><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;"> <i>P représente</i> la pression du gaz, en Pascal (Pa) ;</span></p>
<p class="idocBlock"><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;"> <i>V représente</i> le volume dans lequel il est contenu, en m<sup>3</sup> ;</span><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;"> et <i>n</i> la quantité de matière de gaz en mol ;</span></p>
<p class="idocBlock"><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">R représente la constante des gaz parfaits : <span id="MathJax-Element-3-Frame" class="MathJax" tabindex="0"><span id="MathJax-Span-24" class="math"><span id="MathJax-Span-25" class="mrow"><span id="MathJax-Span-26" class="mi">R</span><span id="MathJax-Span-27" class="mo">=</span><span id="MathJax-Span-28" class="mn">8</span><span id="MathJax-Span-29" class="mo">,</span><span id="MathJax-Span-30" class="mn">314</span><span id="MathJax-Span-31" class="mspace"></span><span id="MathJax-Span-32" class="texatom"><span id="MathJax-Span-33" class="mrow"><span id="MathJax-Span-34" class="mi">J</span></span></span><span id="MathJax-Span-35" class="mo">⋅</span><span id="MathJax-Span-36" class="msubsup"><span id="MathJax-Span-37" class="texatom"><span id="MathJax-Span-38" class="mrow"><span id="MathJax-Span-39" class="mi">K</span></span></span><span id="MathJax-Span-40" class="texatom"><span id="MathJax-Span-41" class="mrow"><span id="MathJax-Span-42" class="mo">−</span><span id="MathJax-Span-43" class="mn">1</span></span></span></span><span id="MathJax-Span-44" class="mo">⋅</span><span id="MathJax-Span-45" class="msubsup"><span id="MathJax-Span-46" class="texatom"><span id="MathJax-Span-47" class="mrow"><span id="MathJax-Span-48" class="mi">m</span><span id="MathJax-Span-49" class="mi">o</span><span id="MathJax-Span-50" class="mi">l</span></span></span><span id="MathJax-Span-51" class="texatom"><span id="MathJax-Span-52" class="mrow"><span id="MathJax-Span-53" class="mo">−</span><span id="MathJax-Span-54" class="mn">1</span></span></span></span></span></span></span> ; </span><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;"><i>T </i>la température du gaz, en kelvin (K).</span></p>
<h2 class="idocBlock"><span style="color: #ff0000;"><strong><span style="font-size: 20px;"><span style="font-family: arial, helvetica, sans-serif;">Exercices corrigés sur les gaz parfaits </span></span></strong></span></h2>
<div class="_df_book df-lite" id="df_1148"  _slug="td1-modele-gaz-parfait" data-title="td1-modele-gaz-parfait" wpoptions="true" thumbtype="" ></div><script class="df-shortcode-script" nowprocket type="application/javascript">window.option_df_1148 = {"outline":[],"autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"http:\/\/science-physique.com\/wp-content\/uploads\/2024\/06\/TD_Modele_gaz_parfait.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}</script>
<p>L’article <a rel="nofollow" href="https://science-physique.com/exercices-corriges-sur-les-gaz-parfaits/">Exercices corrigés sur les Gaz parfaits</a> est apparu en premier sur <a rel="nofollow" href="https://science-physique.com">Science Physique et Chimie</a>.</p>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>Exercices corrigés sur l&#8217;énergie interne et le 1er principe</title>
		<link>https://science-physique.com/exercices-corriges-sur-lenergie-interne-et-le-1er-principe/</link>
		
		<dc:creator><![CDATA[WikiPhysaca78]]></dc:creator>
		<pubDate>Sun, 16 Jun 2024 10:33:08 +0000</pubDate>
				<category><![CDATA[Terminale S]]></category>
		<category><![CDATA[#Energie_Interne]]></category>
		<category><![CDATA[#Premier_Principe]]></category>
		<category><![CDATA[#Thermodynamique]]></category>
		<guid isPermaLink="false">https://science-physique.com/?p=1142</guid>

					<description><![CDATA[<p>Lire plus</p>
<p>L’article <a rel="nofollow" href="https://science-physique.com/exercices-corriges-sur-lenergie-interne-et-le-1er-principe/">Exercices corrigés sur l&#8217;énergie interne et le 1er principe</a> est apparu en premier sur <a rel="nofollow" href="https://science-physique.com">Science Physique et Chimie</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div id="scien-4188482777" class="scien-avant-le-contenu_2 scien-entity-placement"><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2020519711053211"
     crossorigin="anonymous"></script>
<ins class="adsbygoogle"
     style="display:block"
     data-ad-format="autorelaxed"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="6175639843"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div id="scien-875973310" class="scien-avant-le-contenu scien-entity-placement"><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- ADAPTABLE -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="5811891285"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div class="post-views content-post post-1142 entry-meta load-static">
				<span class="post-views-icon dashicons dashicons-chart-bar"></span> <span class="post-views-label">Post Views:</span> <span class="post-views-count">497</span>
			</div><div class="rBk ">
<p><span style="font-size: 20px;"><strong><span style="font-family: arial, helvetica, sans-serif;">L&#8217;énergie interne et l&#8217;enthalpie sont des grandeurs d&#8217;état qui vont nous permettre de retrouver les variations d&#8217;énergie mises en jeu au cours d&#8217;une transformation . Ces grandeurs sont définies à partir de l&#8217;énoncé du premier principe de la thermodynamique.</span></strong></span></p><div id="scien-2429732617" class="scien-contenu_2 scien-entity-placement"><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2020519711053211"
     crossorigin="anonymous"></script>
<!-- DISPLAY1 -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="7680293209"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script></div><div id="scien-2139446217" class="scien-contenu scien-entity-placement"><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- ADAPT4 -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-2020519711053211"
     data-ad-slot="6601900481"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script></div>
<p>Energie interne : A partir de cette relation, on peut montrer que la somme (Q+W) ne dépend que de l&#8217;état initial et de l&#8217;état final du système ; <span style="font-family: arial, helvetica, sans-serif;">on définit alors la grandeur d&#8217;état que l&#8217;on appelle Énergie interne telle que : ΔU = Q+W.</span></p>
<p><span style="font-family: arial, helvetica, sans-serif;">Le symbole Δ placé devant la lettre U signifie que ΔU  est la variation de la grandeur <span style="text-decoration: underline;">U </span>dans le système au cours de la transformation.</span></p>
<div class="hBk_co ">
<div class="iBk info">
<div class="iBk_co ">
<div class="rBk ">
<div class="hBk_co ">
<div class="iBk info">
<div class="iBk_co ">
<div class="rBk ">
<h2 class="hBk_ti"><span style="font-size: 20px; font-family: arial, helvetica, sans-serif;">Premier principe de la thermodynamique : loi de conservation de l&#8217;énergie</span></h2>
<div class="hBk_co ">
<div class="iBk info">
<div class="iBk_co ">
<div class="rBk ">
<p><strong><span style="font-family: arial, helvetica, sans-serif; font-size: 16px;">Au cours d&#8217;une transformation l&#8217; énergie n&#8217;est ni créée ni détruite : elle peut être convertie d&#8217;une forme en une autre ( travail, chaleur ) mais la quantité totale d&#8217;énergie reste invariable.</span></strong></p>
</div>
<div class="rBk ">
<p><span style="font-family: arial, helvetica, sans-serif;">Cette loi constitue le premier principe de la thermodynamique :</span></p>
</div>
<div class="rBk ">
<p><span style="font-size: 16px; font-family: arial, helvetica, sans-serif;">l&#8217;énergie du système + celle du milieu extérieur est constante lors d&#8217;une transformation, quelle que soit la nature de cette transformation.</span></p>
</div>
<div class="rBk ">
<p><span style="font-family: arial, helvetica, sans-serif;"><span style="font-size: 16px;">On aura donc la relation suivante : </span><span style="word-spacing: normal; text-wrap: nowrap;">∑(𝑄+𝑊)cycle=0</span></span></p>
</div>
<div class="rBk ">
<p><span style="font-size: 16px; font-family: arial, helvetica, sans-serif;">où <span class="txt_mathtex_tl "><span id="MathJax-Element-2-Frame" class="MathJax_SVG" style="display: inline-block; font-style: normal; font-weight: normal; line-height: normal; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0" role="presentation" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mi&gt;Q&lt;/mi&gt;&lt;/math&gt;"><span class="MJX_Assistive_MathML" role="presentation">𝑄</span></span></span> et <span class="txt_mathtex_tl "><span id="MathJax-Element-3-Frame" class="MathJax_SVG" style="display: inline-block; font-style: normal; font-weight: normal; line-height: normal; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0" role="presentation" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mi&gt;W&lt;/mi&gt;&lt;/math&gt;"><span class="MJX_Assistive_MathML" role="presentation">𝑊</span></span></span> représentent chaleur et travail échangés avec l&#8217;extérieur.</span></p>
</div>
</div>
</div>
</div>
<p><span style="font-size: 16px; font-family: arial, helvetica, sans-serif;">Système + celle du milieu extérieur est constante lors d&#8217;une transformation, quelle que soit la nature de cette transformation.</span></p>
</div>
<div class="rBk ">
<p><span style="font-family: arial, helvetica, sans-serif;"><span style="font-size: 16px;">On aura donc la relation suivante : </span><span class="txt_mathtex_tl "><span id="MathJax-Element-1-Frame" class="MathJax_SVG" style="display: inline-block; line-height: normal; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0" role="presentation" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mrow class=&quot;MJX-TeXAtom-ORD&quot;&gt;&lt;mo&gt;&amp;#x2211;&lt;/mo&gt;&lt;mo mathvariant=&quot;bold&quot; stretchy=&quot;false&quot;&gt;(&lt;/mo&gt;&lt;mi mathvariant=&quot;bold&quot;&gt;Q&lt;/mi&gt;&lt;mo mathvariant=&quot;bold&quot;&gt;+&lt;/mo&gt;&lt;mi mathvariant=&quot;bold&quot;&gt;W&lt;/mi&gt;&lt;msub&gt;&lt;mo mathvariant=&quot;bold&quot; stretchy=&quot;false&quot;&gt;)&lt;/mo&gt;&lt;mrow class=&quot;MJX-TeXAtom-ORD&quot;&gt;&lt;mtext&gt;cycle&lt;/mtext&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo mathvariant=&quot;bold&quot;&gt;=&lt;/mo&gt;&lt;mn mathvariant=&quot;bold&quot;&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/math&gt;"><span class="MJX_Assistive_MathML" role="presentation">∑(𝑄+𝑊)cycle = 0 </span></span></span>où <span class="txt_mathtex_tl "><span id="MathJax-Element-2-Frame" class="MathJax_SVG" style="display: inline-block; line-height: normal; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0" role="presentation" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mi&gt;Q&lt;/mi&gt;&lt;/math&gt;"><span class="MJX_Assistive_MathML" role="presentation">𝑄</span></span></span> et <span class="txt_mathtex_tl "><span id="MathJax-Element-3-Frame" class="MathJax_SVG" style="display: inline-block; line-height: normal; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;" tabindex="0" role="presentation" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mi&gt;W&lt;/mi&gt;&lt;/math&gt;"><span class="MJX_Assistive_MathML" role="presentation">𝑊</span></span></span> représentent chaleur et travail échangés avec l&#8217;extérieur.</span></p>
<h2><span style="font-family: arial, helvetica, sans-serif; font-size: 20px;">Exercices corrigés sur l&#8217;énergie interne et le 1er principe </span></h2>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="_df_book df-lite" id="df_1139"  _slug="td1-energie-interne-et-premier-principe" data-title="td1-energie-interne-et-premier-principe" wpoptions="true" thumbtype="" ></div><script class="df-shortcode-script" nowprocket type="application/javascript">window.option_df_1139 = {"outline":[],"autoEnableOutline":"false","autoEnableThumbnail":"false","overwritePDFOutline":"false","direction":"1","pageSize":"0","source":"http:\/\/science-physique.com\/wp-content\/uploads\/2024\/06\/TD_Energie_Interne_Systeme_1er_principe.pdf","wpOptions":"true"}; if(window.DFLIP && window.DFLIP.parseBooks){window.DFLIP.parseBooks();}</script>
<p>L’article <a rel="nofollow" href="https://science-physique.com/exercices-corriges-sur-lenergie-interne-et-le-1er-principe/">Exercices corrigés sur l&#8217;énergie interne et le 1er principe</a> est apparu en premier sur <a rel="nofollow" href="https://science-physique.com">Science Physique et Chimie</a>.</p>
]]></content:encoded>
					
		
		
			</item>
	</channel>
</rss>
