4. The rate constant for the reaction rate constant for the reaction 3A 4B is 2.50 x 10-3 L mol-min". How long will...

Question

Question

science chemistry

Answer 1

Answer #1

By seeing the unit of k, we can say that this is 2nd order reaction.

we have:

[A]o = 0.75 M

[A] = 0.5 M

k = 2.5*10^-3 M-1.min-1

use integrated rate law for 2nd order reaction

1/[A] = 1/[A]o + k*t

1/(0.5) = 1/(0.75) + 2.5*10^-3*t

2 = 1.333 +2.5*10^-3*t

2.5*10^-3*t = 0.6667

t = 2.667*10^2 min

Answer: 267 min

Answer 2

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