Question

For the reaction $2HI_{(g)} \leftrightharpoons H_{2(g)} + I_ {2(g)} -Q\, KJ$ , the equilibrium constant depends upon

• A. temperature
• B. pressure
• C. catalyst
• D. volume

Answer 1

Answer: (A)

temperature

Answer 2

$2 HI (g) \rightleftharpoons H _{2}(g)+ I _{2}(g)-Q \,kJ$
$\Delta n_{g}=n_{P}-n_{R}=2-2=0$

As the number of moles of products and reactants are equal, so equilibrium constant is not affected by any change in pressure and volume. Catalyst also does not affect the equilibrium constant. It is an endothermic reaction, hence equilibrium constant depends only upon the temperature.