Question

Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of Ni2+ is increased? View Available Hint(s) Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of is increased? Ni(OH)2(s)⇌Ni2+(aq)+2OH−(aq) [Ni(H2O)6]2+(aq)+3en(aq)⇌[Ni(en)3]2+(aq)+6NH3(aq) Ni2+(aq)+6NH3(aq)⇌[Ni(NH3)6]2+ NiS(s)⇌Ni2+(aq)+S2−(aq)

Answer 1

Step-by-step explanation:

According to Le Chatelier's principle, any disturbance occurring in an equilibrium reaction will shift the equilibrium in a direction that will oppose the change.

As the given reactions are as follows.

• 
  `Ni(OH)_(2)(s) \rightleftharpoons Ni^(2+)(aq) + 2OH^(-)(aq)`

When concentration of
`Ni^(2+)` is increased in this reaction then reaction will shift in a direction that will be opposing the change. This means that the reaction will shift in backward direction.

• 
  `[Ni(H_(2)O)_(6)]^(2+)(aq) + 3en(aq) \rightleftharpoons [Ni(en)_(3)]^(2+)(aq) + 6NH_(3)(aq)`

In this reaction, both water and ethylenediamine are neutral molecules. Hence, charge on nickel on each side will be equal to +2. Therefore, reaction will remain in equilibrium.

• 
  `[Ni^(2+)(aq) + 6NH_(3)(aq) \rightleftharpoons [Ni(NH_(3))_(6)]^(2+)(aq)`

When we increase the concentration of
`Ni^(2+)` then equilibrium reaction will shift in the forward direction.

• 
  `[NiS(aq) \rightleftharpoons Ni^(2+)(aq) + S^(2-)(aq)`

Here, on increasing the concentration of
`Ni^(2+)` will shift the equilibrium in backward direction.

Thus, we can conclude that out of the given options
`[Ni^(2+)(aq) + 6NH_(3)(aq) \rightleftharpoons [Ni(NH_(3))_(6)]^(2+)(aq)` is the chemical reaction in which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of
`Ni^(2+)` is increased.