Question

28) Consider the following reaction at equilibrium in a closed container:

Zn(s) + 2HCl(aq) ⇌ Zn2+(aq) + 2Cl-(aq) + H2(g)

Which of the following changes WILL NOT affect the equilibrium of the system?

A) increasing the concentration of HCl(aq)

B) adding Zn to the solution
C) decreasing the pressure of H2

D) adding ZnCl2 to the solution
E) decreasing the volume of the container

Answer 1

Lechatlier principle : when the equilibrim is subjected to change the temparature ,pressure,concentration then the equilibrium shifted in the direction in which the change is reduced are nullified.equilibrium constants l

1) Concentration of reactants increases cthen the equilibrium shifted in product side

2)concentration of product increases then the equilibrium shifted in reactant side.

A),B),C),D) options are correct .will effect equilibrium .E) option will not effect equilibrium