- The decomposition of represented below attains equilibrium at a given and

CHEMISTRY · Single correct · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

- The decomposition of

\text{HNO}_3

represented below attains equilibrium at a given

P_{eq.}

and

T

. If we start

4\text{HNO}_{3(g)} \rightleftharpoons 4\text{NO}_{2(g)} + 2\text{H}_2\text{O}_{(g)} + \text{O}_{2(g)}

with pure

\text{HNO}_3

having initial pressure

P_i

, then at equilibrium which one is not correct ? (1)

K_p = \frac{1024(P_{\text{O}_2})^7}{(P_{eq.} - 7P_{\text{O}_2})^4}

(2)

K_p = \frac{1024(P_{\text{O}_2})^7}{(P_i - 4P_{\text{O}_2})^4}

(3)

K_p^\circ = \frac{1024(P_{\text{O}_2})^7}{(P_{eq.} - 7P_{\text{O}_2})^4} \times \left(\frac{1}{P^\circ}\right)^3

(4) All of these