A gas mixture of volumetric composition 45% , 50% and 5% was passed at 1380 K over a…

CHEMISTRY · Subjective · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

A gas mixture of volumetric composition 45%

\text{CO}

, 50%

\text{CO}_2

and 5%

\text{N}_2

was passed at 1380 K over a briquet of

\text{ZnO}

, so that

\text{Zn}

vapours was produced according to the reaction:

\text{ZnO}(\text{s}) + \text{CO}(\text{g}) \rightleftharpoons \text{Zn}(\text{g}) + \text{CO}_2(\text{g})

. Under steady condition, the rate of input gas flow at STP is

0.224 \text{ dm}^3 \text{ min}^{-1}

. The rate of loss of mass of

\text{ZnO}

5 \times 10^{-4} \text{ mol min}^{-1}

P = 770

torr. Find

K_P

at 1380 K assuming ideal gas behaviour.