Consider the following equilibrium reaction having gaseous reactants and products.

4HCl + O2 ⇌ 2H2O + Cl2

Which of the following would result from increasing only the concentration of oxygen?

The concentration of hydrochloric acid increases.
The rate of forward reaction increases.
The rate of backward reaction increases.
The concentration of water vapor decreases.

Question

Consider the following equilibrium reaction having gaseous reactants and products.

4HCl + O2 ⇌ 2H2O + Cl2

Which of the following would result from increasing only the concentration of oxygen?

The concentration of hydrochloric acid increases.
 The rate of forward reaction increases.
 The rate of backward reaction increases.
 The concentration of water vapor decreases.

Vocaloid · Answer

Le chatelier’s principle - if you add a reactant, the equilibrium will shift to use up more reactant. Would that increase the forward, or the backward, reaction?

kekeman · Answer

The rate of forward reaction increases.

kekeman · Answer

Because it needs to use up some of the additional reactant?

kekeman · Answer

@vocaloid wrote:

Le chatelier’s principle - if you add a reactant, the equilibrium will shift to use up more reactant. Would that increase the forward, or the backward, reaction?

Do you agree?

Vocaloid · Answer

Yes