Question

Consider the given system in equilibrium:

$2S{O}_2\left(g\right)+O_2\left(g\right)\leftrightharpoons 2S{O}_3\left(g\right)+heat$

What effect will addition of vanadium pentoxide have on the given equilibrium system?

• A. A forward reaction will be favored.
• B. A backward reaction will be favored.
• C. The new reaction mixture will contain more of sulphur trioxide.
• D. There won't be any effect on the equilibrium system.

Answer 1

The correct option is D

There won't be any effect on the equilibrium system.

Vanadium pentoxide is a positive catalyst which increases the rate of the reaction. But catalysts does not cause any effect on the equilibrium system. It helps the system to reach equilibrium faster. Therefore, the addition of vanadium pentoxide will not have any effect on the equilibrium system.