Question

In the dissociation of $2HI\left(g\right)\rightleftharpoons H_2\left(g\right)+I_2\left(g\right)$, the degree of dissociation will be affected by:

• A. Increase of temperature
• B. Addition of inert gas
• C. Addition of $H_2$ an d$I_2$
• D. Increase of pressure

Answer 1

The correct option is A Increase of temperature

In the dissociation of $2HI\left(g\right)\rightleftharpoons H_2\left(g\right)+I_2\left(g\right)$, the degree of dissociation ( and the value of the equilibrium constant) will be affected by increase (or decrease) of temperature. It will not be affected by addition of inert gas, addition of $H_2$ an d$I_2$ or increase (or decrease) of pressure.