<ol>
<li>Consider the multi-step reaction that has the overall reaction
2A + 2B ---- C + D</li>
</ol>
<p>What is the rate law expression that would correspond to the following proposed mechanism?</p>
<p>A + B <-------> I (fast)
I + B -------> C + X (slow)
X + A --- D (fast)</p>
<ol>
<li> Rate = k </li>
<li> Rate = k [A]22</li>
<li> Rate = k [A]</li>
<li> Rate = k [A]2*</li>
<li> rate = k *</li>
<li> Rate = k [A]2</li>
<li> Rate = k [A]</li>
<li> Rate = k [A]2</li>
<li> Rate = k[A]**</li>
</ol>
<p>I put 5. </p>
<ol>
<li>The reaction 3A + 2B + 4C -----> products</li>
</ol>
<p>Is known to be second order in A, first order in B, and independent of the concentration of C. What is the value of the rate constant for this reaction if its rate is 0.695 M*s^-1 when [A] = 5.00 M, ** = 7.00 M, and [C] = 3.00 M? </p>
<p>I got 0.00397 M^-2 s^-1</p>
<ol>
<li>For the reaction 2NO2 ----> 2NO + O2</li>
</ol>
<p>Rate = 1.4 * 10^-10 M*s [NO2]2 at 25.0 C.
If 2 mol of NO2 are initially present in a sealed 1.00 liter vessel at 25 C, what is the concentration of NO2 after 140 years? </p>
<p>I got 0.894 M. </p>
<p>The decomposition of sulfuryl chloride into sulfur dioxide and chlorine</p>
<p>SO2Cl2(g) ----> SO2(g) + Cl2(g)</p>
<p>Follows first-order kinetics. At 320 C the rate constant is 2.2 * 10^-5 sec^-1. If one started with a sample containing 0.16 moles of sulfuryl chloride per liter at 320 C what concentration would be left after 6.00 hours?</p>
<p>1) 0.10 M
2) 0.15 M
3) 0.052 M
4) 0.12 M
5) 0.26 M</p>
<p>I put 1. </p>
<p>Consider the reaction
2NOCl (g) -----> 2 NO (g) + Cl2(g)</p>
<p>With rate constant 0.0480 M^-1 s^-1 when conducted at 200 C. The initial concentration of NOCl was 0.521 M. What is the concentration of NOCl after 0.535 minutes and at 200 C?</p>
<ol>
<li> 0.289 M</li>
<li> 0.0239 M</li>
<li> 0.112 M</li>
<li> 0.508 M</li>
<li> 0.200 M</li>
</ol>
<p>I put 3 for this one. </p>
<p>Can anyone verify these answers? Thanx.</p>