At 1000 K, the reaction has . A mixture at this temperature is at equilibrium with ,…

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

Problem

At 1000 K, the reaction

\mathrm{2\,SO_2(g)+O_2(g)\rightleftharpoons 2\,SO_3(g)}

has

K_p=4.3

. A mixture at this temperature is at equilibrium with

P_{\mathrm{SO_2}}=0.50\,\text{atm}

P_{\mathrm{O_2}}=0.20\,\text{atm}

, and

P_{\mathrm{SO_3}}=0.464\,\text{atm}

. The volume of the reaction vessel is then suddenly halved at constant temperature. Calculate the value of the reaction quotient

Q_p

immediately after the compression (before any shift occurs). (a)

4.3

(b)

0.23

(c)

2.2

(d)

8.6