Using the reaction mechanism below, answer the following questions: 1. Cl2 -> 2C
ID: 928377 • Letter: U
Question
Using the reaction mechanism below, answer the following questions: 1. Cl2 -> 2Cl 2. Cl + CHCl3 -> HCl + CCl3 3. Cl + CCl3 -> CCl4 a. What is the chemical equation for the overall reaction? b. If the first step was the slowest step, what is the rate law for the overall reaction? What is the overall order of the reaction? c. If the second step was the slowest step, what is the rate law for the overall reaction? What is the overall order of the reaction? d. How could you test which of the two rate laws is correct? e. Are there any intermediates in the reaction? If so, identify them.
Explanation / Answer
a) chemical equation for the overall reaction
Cl2 + CHCl3 -----------------> CCl4
b) If the first step was the slowest step,
Rare = K[Cl2] thus= first order
c) If the second step was the slowest step
Rare = K[Cl] [CHCl3] thus=second order
d) it rate increases with increase in CHCl3 then Rare = K[Cl] [CHCl3] is correct
it rate increases with increase in Cl2 but not with CHCl3 then Rare = K[Cl] is correct
e) yes CCl3 and Cl
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