When NO and are mixed

CHEMISTRY · Multi-part · AP · Chemistry · Equilibrium · Equilibrium

Problem

When NO and

NO_2

are mixed, the following equilibria are readily obtained;

2NO_2 \rightleftharpoons N_2O_4 \quad K_P = 6.8 \text{ atm}^{-1}

and

NO + NO_2 \rightleftharpoons N_2O_3

In an experiment when NO and

NO_2

are mixed in the ratio of 1 : 2, the final total pressure was 5.05 atm and the partial pressure of

N_2O_4

was 1.7 atm. Calculate : (a) the equilibrium partial pressure of NO. (b)

K_P

for

NO + NO_2 \rightleftharpoons N_2O_3