Given exothermic reaction CoCl 42-+6 H 2 O (l) leftharpoons[ Co ( H 2 O )6]2++4 Cl - Which one of the following will decrease the equilibrium concentration of CoCl 42- ?

Question

Given exothermic reaction CoCl 42-+6 H 2 O (l) leftharpoons[ Co ( H 2 O )6]2++4 Cl - Which one of the following will decrease the equilibrium concentration of CoCl 42- ? (A) Addition of HCl (B) Addition of Co ( NH 3)2 (C) The solution is diluted with water (D) The temperature is increased

Tardigrade Admin · Accepted Answer

Here; water is reactant so increase in concentration of reactant shifts the equilibrium in the forward direction. Hence; on diluting the solution; the equilibrium shifts in the COCl 42-

Q. Given exothermic reaction
$C o C l_{4}^{2 -} + 6 H_{2} O_{(l)} ⇌ [C o (H_{2} O)_{6}]^{2 +} + 4 C l^{-}$
Which one of the following will decrease the equilibrium concentration of $C o C l_{4}^{2 -}$ ?

Addition of $H Cl$

Addition of $C o (N H_{3})_{2}$

The solution is diluted with water

The temperature is increased

Here; water is reactant so increase in concentration of reactant shifts the equilibrium in the forward direction. Hence; on diluting the solution; the equilibrium shifts in the $COC l_{4}^{2 -}$

Q. Given exothermic reaction CoCl42−​+6H2​O(l)​⇌[Co(H2​O)6​]2++4Cl− Which one of the following will decrease the equilibrium concentration of CoCl42−​ ?

Addition of HCl

Addition of Co(NH3​)2​