Chaper 15 Homework: Question 7 Part E k = 3.33•10 -3 M -2 *s -1 ± Reaction Order

Question

Chaper 15 Homework: Question 7 Part E

k= 3.33•10-3 M-2*s-1

± Reaction Order Part A For the reaction A B + CD + E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected What is the reaction order with respect to A? Express your answer as an integer ia Initial rate 0.30 0.30 0.60 0.60 0.30 0.30 0.30 0.60 0.30 0.90 0.30 0.30 9.0x10-5 2.7x104 3.6x10-4 3.6x10-4 Submit Hints My Answers Give Up Review Part Correct The rate quadrupled when [A] was doubled. This indicates an order of 2 with respect to A because 4 22. 4 Part B What is the reaction order with respect to B? Express your answer as an integer Submit Hints My Answers Give Up Review Part Correct The rate didn't change when B was doubled. This indicates an order of 0 with respect to B

Explanation / Answer

Part E : rate = k[A]^2.[C]

with,

k = 3.3 x 10^-3 M-2.s-1

[A] = 0.35 M

[C] = 0.5 M

we get initial rate,

rate = 3.3 x 10^-3 x (0.35)^2 x (0.5) = 2.02125 x 10^-4 M/s

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