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Grade 12Inorganic Chemistry

Q. Elementary reaction 2SO2 + O2 = Product. If pressure is increased by 3 times then reaction rate becomes ?

a. Increases by 3 times

b. Increases by 9 times

c. Increases by 18 times

d. Increases by 27 times

Here correct answer is d.

How it came ?

Profile image of Tejas Gajjar
12 Years agoGrade 12
Answers icon

1 Answer

Profile image of Sunil Kumar FP
11 Years ago
rate of the reaction is given by =k[SO2]^2[O2]
if the presuure is increased 3 times then partial pressure of SO2 is 9p^2
partial pressure of O2=p^2
now the rate of the reaction is 9p^2*p^2=27p^3

thus the rate increases 27 times

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