Chemical EquilibriumMedium

Question

At 0°C and 1 atm pressure, 1 L of N2O4 decomposes to NO2 according to the equation N2O4(g) $\rightleftharpoons$2NO2 (g). To what extent has the decomposition proceeded when the original volume is 25% less than that of existing volume?

Options

A.0.67
B.0.33
C.0.25
D.0.75

Solution

N2O4 $\rightleftharpoons$ 2NO2

Initial mole a 0

Mole at Equilibrium a – x 2x

From question, $(a + x) \times \frac{75}{100} = a \Rightarrow \alpha = \frac{x}{a} = \frac{1}{3}$

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