Question

Homework 8-3_1 Reaction Rate Orders, Temp Effects Reaction Rates and Rate Orders The following initial rate data was collected for the reaction: HI(g) + CHşl(g) à CH.(g) +1-(9) Experiment (HI) (CHI) Initial Rate 0.015 M0.900 M 4.01 x 10M's 0.030 M0.900 M 8.04 x 10'Ms 0.030 M0.450 M 3.99 x 10 m/s 1. What is the rate law for this reaction? a. Rate =k [HI] [CHI] b. Rate = k [HI] [C,H,I] c. Rate = k [HI] (C,H,I] d. Rate = k [HI] [CHI] Explain why you chose this answer. What is your reasoning? You have decided to run a similar set of experiments to determine the rate law for the following reaction: A+B à C+D 2. In your lab, you have 5 bottles of reactant A (1-5 M) and five bottles of reactant B (1-5 M). Fill out the table to show what experiments you would want to run to determine the rate order of the reaction. [A] mol/L (B) mol/L Experiment 1 Experiment 2 Experiment 3 Explain your reasoning.

Answer 1

1. Acc. To given data we found that reaction is first order with respect to [HI] and [ C2H5I]. So, overall order of the reaction is 2.

Acc. to constant the and given data table. ci [HI ] doubles and cin doubles the [ C2 Hs I] is rate ire rate a [HI] Hence, on is first order wort [HI] ciis and liii [HI] is constant and [CH SI] from date is halted , half the reabe ne rate a [ Cats I] Hence, son is first-order wort [CansI] + Rate 2 x THI] [ Cg H SI] A B mi I B2 B3 By Br 2 3 4 5 Bre, a MI. 2 cz cu es 3 4 5 [A]uelle [B] Malle Exp. 1 Li 4 Liis Exp. r 47 - Exp.3 2 (116) determine rate Similarly from ci and in we can relan'on with CAB.. and from chiar as CAJ is rematant of [B] with rate is determined. then Relation

2. Similarly, we can determine the rate expression same as in question 1.