The value of Ksp of HgCl2 at room temperature is 4 × 10-15. The concentration of Cl- ion in its aqueous solution at saturation point is

Question

The value of Ksp of HgCl2 at room temperature is 4 × 10-15. The concentration of Cl- ion in its aqueous solution at saturation point is (A) 1 × 10-5  (B) 2 × 10-5 (C) 2 × 10-15  (D) 8 × 10-15

Tardigrade Admin · Accepted Answer

Let solubility of salt HgCl 2 is S. HgCl 2 arrow Hg +2+2 Cl - Its solubility product =(2 S )2( S )=4 S 3=4 × 10-15 So, concentration of Cl ominus ion =1 × 10-5

Q. The value of $K_{s p}$ of $H g C l_{2}$ at room temperature is $4 \times 1 0^{- 15}$ . The concentration of $C l^{-}$ ion in its aqueous solution at saturation point is

$1 \times 1 0^{- 5}$

$2 \times 1 0^{- 5}$

$2 \times 1 0^{- 15}$

$8 \times 1 0^{- 15}$

Let solubility of salt $H g C l_{2}$ is $S$ .
$H g C l_{2} \to H g^{+ 2} + 2 C l^{-}$
Its solubility product
$= (2 S)^{2} (S) = 4 S^{3} = 4 \times 1 0^{- 15}$
So, concentration of $C l^{⊖}$ ion $= 1 \times 1 0^{- 5}$

Q. The value of Ksp​ of HgCl2​ at room temperature is 4×10−15. The concentration of Cl− ion in its aqueous solution at saturation point is

1×10−5

2×10−5

2×10−15

8×10−15