Question

Predict the direction in which the following equilibrium will shift backward.

$\underset{\left(g\right)}{N_2}+\underset{\left(g\right)}{3H_2}\iff \underset{\left(g\right)}{2N{H}_3\Delta H}=-100Joule$

• A. increasing Temperature
• B. increasing pressure
• C. addition of catalyst
• D. on addition of $N{H}_3$

Answer 1

The correct option is D on addition of $N{H}_3$

as the given reaction has enthalpy of formation negative,thus reaction is exothermic.

Thus on increasing temperature equilibrium will shift in the backward direction as reaction is exothermic.

on increasing pressure equilibrium will shift in backward direction.

Addition of catalyst does not effect equilibrium positions.

Addition of NH3 will lead in the shifting of equilibrium in backward direction.