Question

Reaction $2Ba{O}_2\left(s\right)\rightleftharpoons 2BaO\left(s\right)+O_2\left(g\right);\Delta H=+ve$. At equilibrium condition, Pressure of $O_2$ is depends on :

• A. Increase mass of $Ba{O}_2$
• B. Increase mass of BaO
• C. Increase temp. at $E{q}^m$.
• D. Increase mass of $Ba{O}_2$ and BaO both

Answer 1

Answer: (C)

Increase temp. at $E{q}^m$.

$K_p=P_{O_2}$

Hence, pure solids of added do not change state of equilibrium.

Only a change in temperature changes $K_p$ hence $P_{O_2}$ will be affected by increasing temperature.

Hence, option C is correct.