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1) A particular first-order reaction has a rate constant of 1.35\times 10^2 /s at 25.0$^\circ$C. What is the magnitude of $k$ at 75.0$^\circ$C if $E_a$ = 85.6 kJ/mol? 2) The decomposition of ozone, O$_3$, is believed to occur by a two-step mechanism: $\bullet$Write the equation for the overall reaction. $\bullet$Write the rate law for the overall reaction. step 1: O$_3 \rightarrow$ O$_2$ + O step 2: O$_3$ + O $\rightarrow$ 2O$_2$ Slow Fast 3) Write the equilibrium constant expression in terms of concentrations SO$_2$Cl$_2$(s) $\rightleftharpoons$ SO$_2$(g) + Cl$_2$(g)

          1) A particular first-order reaction has a rate constant of 1.35\times 10^2 /s at 25.0$^\circ$C. What is the magnitude of $k$ at 75.0$^\circ$C if $E_a$ = 85.6 kJ/mol?
2) The decomposition of ozone, O$_3$, is believed to occur by a two-step mechanism:
$\bullet$Write the equation for the overall reaction.
$\bullet$Write the rate law for the overall reaction.
step 1: O$_3 \rightarrow$ O$_2$ + O
 step 2: O$_3$ + O $\rightarrow$ 2O$_2$
Slow
Fast
3) Write the equilibrium constant expression in terms of concentrations
SO$_2$Cl$_2$(s) $\rightleftharpoons$ SO$_2$(g) + Cl$_2$(g)
        
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1) A particular first-order reaction has a rate constant of 1.35×10^2 /s at 25.0^∘C. What is the magnitude of k at 75.0^∘C if Ea = 85.6 kJ/mol?
2) The decomposition of ozone, O3, is believed to occur by a two-step mechanism:
∙Write the equation for the overall reaction.
∙Write the rate law for the overall reaction.
step 1: O3 → O2 + O
 step 2: O3 + O → 2O2
Slow
Fast
3) Write the equilibrium constant expression in terms of concentrations
SO2Cl2(s) ⇌ SO2(g) + Cl2(g)

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Chemistry: Structure and Properties
Chemistry: Structure and Properties
Nivaldo Tro 2nd Edition
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A particular first-order reaction has a rate constant of 1.35 imes (10^(2))/(s) at 25.0deg C. What is the magnitude of k at 75.0deg C if Ea=85.6 k(J)/(m)ol ? The decomposition of ozone, O_(3), is believed to occur by a twostep mechanism: -Write the equation for the overall reaction. -Write the rate law for the overall reaction. step 1: O_(3)->O_(2)+O Slow step 2: O_(3)+O->2O_(2) Fast Write the equilibrium constant expression in terms of concentrations SO_(2)Cl_(2)(s)⇌SO_(2)(g)+Cl_(2)(g) 100 1) A particular first-order reaction has a rate constant of 1.35102 /s at 25.0'C. What is the magnitude of k at 75.0'C if Ea = 85.6 kJ/mol? 2) The decomposition of ozone, O3, is believed to occur by a two step mechanism: Write the equation for the overall reaction. -Write the rate law for the overall reaction. step 1: O3 > O2 + 0 step 2: O3 + O -> 2 O2 Slow Fast 3) Write the equilibrium constant expression in terms of concentrations SO2C12(s) = SO2(g)+ Cl2(g) 100
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Transcript

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00:01 Here they provide a proposed mechanism for the decomposition of ozone.
00:07 The first step is ozone, separating into o2 and o, and they tell us that the first step is much slower than the second, so this is the slow or rate determining step.
00:27 The second step then is o3, taking on o to become two.
00:35 O2 gas.
00:38 So the overall balanced reaction will be the sum of these two, where we see o is an intermediate being canceled, and we get 2, 03, going to 3, 02.
00:56 The experimentally observable rate law for the overall chemical equation would come from the rate law for the rate determining step, the slow step, and that, that.
01:11 That is written according to the molecularity of the reaction rate is equal to k multiplied by we only have ozone as a product and just one of them.
01:23 So this is the rate law for the first step and if it's the slow step which they tell us it is then it's also the rate determining step and this is the rate law for the overall reaction...
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