Respuesta :
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.
- [tex]Ni(OH)_{2}(s) \rightleftharpoons Ni^{2+}(aq) + 2OH^{-}(aq)[/tex]
When concentration of [tex]Ni^{2+}[/tex] 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.
- [tex][Ni(H_{2}O)_{6}]^{2+}(aq) + 3en(aq) \rightleftharpoons [Ni(en)_{3}]^{2+}(aq) + 6NH_{3}(aq)[/tex]
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.
- [tex][Ni^{2+}(aq) + 6NH_{3}(aq) \rightleftharpoons [Ni(NH_{3})_{6}]^{2+}(aq)[/tex]
When we increase the concentration of [tex]Ni^{2+}[/tex] then equilibrium reaction will shift in the forward direction.
- [tex][NiS(aq) \rightleftharpoons Ni^{2+}(aq) + S^{2-}(aq)[/tex]
Here, on increasing the concentration of [tex]Ni^{2+}[/tex] will shift the equilibrium in backward direction.
Thus, we can conclude that out of the given options [tex][Ni^{2+}(aq) + 6NH_{3}(aq) \rightleftharpoons [Ni(NH_{3})_{6}]^{2+}(aq)[/tex] is the chemical reaction in which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of [tex]Ni^{2+}[/tex] is increased.
