Chemical Kinetics Question 340

Question: The half life period for catalytic decomposition of $ AB_3 $ at 50 mm Hg is 4 hrs and at 100 mm Hg it is 2 hrs. The order of reaction is

Options:

A) 1

B) 3

C) 2

D) 0

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ {t_{1/2}}\propto \frac{1}{{{(p)}^{n-1}}} $ where n is the order of reaction $ \frac{2}{4}={{( \frac{50}{100} )}^{n-1}},or,\frac{1}{2}={{( \frac{1}{2} )}^{n-1}} $

$ n-1=1;n=2 $



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