chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14-16-hefbhqal78k

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Elementary reaction</B></primary></p>
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<p><strong>Example</strong></p>
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<p>$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}+\mathrm{OH}^-$ $\rightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{Br}^{-1}$</p>
</li>
</ul>
<ul>
<li>As these molecules (reactants) come close, these interact</li>
</ul>
<p>$\quad \quad \quad \downarrow$</p>
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<li>Chemical bonds distort</li>
</ul>
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<hr>
<footer style="font-size:18px;"> <span style="color:blue">Elementary reaction</span> $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Elementary reaction</B></primary></p>
<hr>
<main>
<div style='float: left; width:60%;font-size:22px;text-align:left'>
<ul>
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<p>Potential energy reaches maximum</p>
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<p>The state where potential energy is maximum known transition state</p>
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<p>Transition state is represented as $\left.\begin{array}{c}\text { (double }\text { dagger }\end{array}\right) \rightarrow \stackrel{\downarrow}{\neq}$</p>
</li>
</ul>
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<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/f0b2d20f-9bf7-4300-5522-9ee76537e900/public" style='width:80%'>
</div>
</main>
<hr>
<footer style="font-size:18px;"> <span style="color:blue">Elementary reaction</span> $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Elementary reaction</B></primary></p>
<hr>
<main>
<div style='float: left; width:50%;font-size:22px;text-align:left'>
<ul>
<li>
<p>Consider a reaction</p>
</li>
<li>
<p>$A_2+B_2 \rightarrow 2 A B$</p>
</li>
<li>
<p>$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}+\mathrm{OH}^{-}$</p>
</li>
<li>
<p>Ea $\rightarrow$ attained through collisions between the reactants is known kinetic energy</p>
</li>
</ul>
</div>
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<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/37c7ddfd-3fec-4ea3-9144-681f04483f00/public" style='width:100%'>
</div>
</main>
<hr>
<footer style="font-size:18px;"> <span style="color:blue">Elementary reaction</span> $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Elementary reaction</B></primary></p>
<hr>
<main>
<div style='float: left; width:50%;font-size:22px;text-align:left'>
<ul>
<li>
<p>$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Cl}$ collides with it own molecules</p>
</li>
<li>
<p>$\mathrm{C}_6 \mathrm{H}_3 \mathrm{CH}_2 \mathrm{Cl}$ can also collide with the solvent molecules</p>
</li>
<li>
<p>Difference in potential energy between the products and reactants</p>
</li>
<li>
<p>Potential energy of products - Potential energy of reactant = enthalpy change</p>
</li>
</ul>
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<img src="https://imagedelivery.net/YfdZ0yYuJi8R0IouXWrMsA/e091fed7-6483-4c33-a47b-3edd0cad7700/public" style='width:100%'>
</div>
</main>
<hr>
<footer style="font-size:18px;"> <span style="color:blue">Elementary reaction</span> $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Examples of elementary reaction</B></primary></p>
<hr>
<main>
<div style='float: left; width:100%;font-size:22px;text-align:left'>
<ul>
<li>
<p>$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Cl}+\mathrm{OH}^{-} \rightarrow \mathrm{C}_6\mathrm{H}_5 \mathrm{CH}_3 \mathrm{OH}\ +\mathrm{Cl}^{-}$</p>
</li>
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<p><strong>Step 1.</strong> $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{Cl} \rightarrow \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2^{+}+\mathrm{Cl}^{-}$…(3)</p>
</li>
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<p><strong>Step 2.</strong> $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2{ }^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}$…(4)</p>
</li>
</ul>
</div>
<div style='float: right; width:0%;'>
<p><img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-296-1300.8.jpg"></p>
</div>
</main>
<hr>
<footer style="font-size:18px;"> Elementary reaction $\rightarrow$ Activated complex $\rightarrow$ <span style="color:blue">Examples of elementary reaction</span> $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Molecularity</B></primary></p>
<hr>
<main>
<div style='float: left; width:100%;font-size:22px;text-align:left'>
<ul>
<li>
<p>$A \rightarrow P$  $\text {unimolecular}$</p>
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<li>
<p>$r=k[A] \text { unimolecular } $</p>
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<li>
<p>$A+B \rightarrow P$ $\text {bimolecular}$</p>
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<li>
<p>$r=k[A][B] \text { bimolecular } $</p>
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<li>
<p>$2 A+B \rightarrow P$ $\text {termolecular}$</p>
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<li>
<p>$r=k[A]^2[B]\text { termolecular }$</p>
</li>
<li>
<p>For an elementary reaction, molecularity and order are the same</p>
</li>
</ul>
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<div style='float: right; width:0%;'>
<p><img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-543-2316.0.jpg">
<img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-584-2484.0.jpg"></p>
</div>
</main>
<hr>
<footer style="font-size:18px;"> Elementary reaction $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ <span style="color:blue">Molecularity</span> $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ Complex or composite reaction </footer>

<p><Success style="float:center;text-align:center;font-size:28px;"> <B>Chemical kinetics Lecture-14</B></Success></p>
<p><primary style="float:center;text-align:center;font-size:24px;"> <B>Complex or composite reaction</B></primary></p>
<hr>
<main>
<div style='float: left; width:100%;font-size:22px;text-align:left'>
<ul>
<li>
<p>Detection of reaction intermediates</p>
</li>
<li>
<p>Difficult to identify intermediates</p>
</li>
<li>
<p>Form of experimental rate equation</p>
</li>
<li>
<p>$\mathrm{ClO}^{-}\left(\mathrm{aq}\right)+I^{-}\left(\mathrm{aq}\right) \rightarrow \mathrm{Cl}^{-}\left(\mathrm{aq}\right)+I O^{-}\left(\mathrm{a}_q\right)$</p>
</li>
<li>
<p>$r=R\left[\mathrm{ClO}^{-}\right]\left[I^{-}\right]$</p>
</li>
<li>
<p>$r=k \frac{\left[\mathrm{ClO}^{-}\right]\left[I^{-}\right]}{\left[\mathrm{OH}^{-}\right]}$</p>
</li>
<li>
<p>Reaction is composite or complex in nature</p>
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</ul>
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<p><img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-722-3194.4.jpg">
<img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-05.jpg">
<img alt="image" src="/subject-images/iitpal/image/chemistry-class-12-unit-04-chapter-14-chemical-kinetics-l-14_16-hefbhqal78k-06.jpg"></p>
</div>
</main>
<hr>
<footer style="font-size:18px;"> Elementary reaction $\rightarrow$ Activated complex $\rightarrow$ Examples of elementary reaction $\rightarrow$ Molecularity $\rightarrow$ Elementary reaction $\rightarrow$ Examples $\rightarrow$ Important question of Molecularity $\rightarrow$ <span style="color:blue">Complex or composite reaction</span> </footer>