SATHEE: Equilibrium Question 195

Equilibrium Question 195

Question: The solubility product of $A g_{2} C r O_{4}$ is $32 \times 10^{- 12}$ . What is the concentration of $C r O_{4}^{-}$ ions in that solution [BHU 1997; DPMT 2004]

Options:

A) $2 \times 10^{- 4}, m / s$

B) $16 \times 10^{- 4}, m / s$

C) $8 \times 10^{- 4}, m / s$

D) $8 \times 10^{- 8}, m / s$

Show Answer

Answer:

Correct Answer: A

Solution:

$\underset{S}{A g C r O_{4}}, \to \underset{2 S}{2 A g^{+}}, + \underset{S}{C r O_{4}^{-}},$

$K_{s p} = {(2 S)}^{2} S = 4 S^{3}$

$S = {(\frac{K_{s p}}{4})}^{\frac{1}{3}}$

$= {(\frac{32 \times 10^{- 12}}{4})}^{\frac{1}{3}}$

$= 2 \times 10^{- 4}$ M.

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Equilibrium Question 195

Question: The solubility product of Ag2CrO4 is 32×10−12 . What is the concentration of CrO4− ions in that solution [BHU 1997; DPMT 2004]

Options:

Answer:

Solution:

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Question: The solubility product of $A g_{2} C r O_{4}$ is $32 \times 10^{- 12}$ . What is the concentration of $C r O_{4}^{-}$ ions in that solution [BHU 1997; DPMT 2004]