Question

A(g) ⇌ 2B(g) + C(g)

For the given reaction, if the initial pressure is 450 mm Hg and the pressure at time t is 720 mm Hg at a constant temperature T and constant volume V. The fraction of A(g) decomposed under these conditions is x × 10^–1 . The value of x is _____ (nearest integer)

Answer 1

Correct answer is 3

Fraction of A decomposed = 135/450 = 0.3 =  3 x 10^-1 

So, x = 3