HCl is added to a saturated AgCl solution until the [Cl^-1] is 0.010 M.What is the [Ag⁺¹] remaining in the solution? The K_sp of AgCl is 1.8 10^-10.

Question

Quizplus · Accepted Answer

AgCl (s) ⇌ Ag+ (aq) + Cl- (aq)

Ksp = [Ag+] [Cl-]

Let the initial concentration of AgCl be x. 
At equilibrium, [Cl-] = 0.010 M.

Therefore, Ksp = x * 0.010

1.8 x 10^-10 = x * 0.010

x = 1.8 x 10^-8 M

The remaining Ag+ concentration is equal to the equilibrium concentration of Ag+ ions produced by the dissolution of AgCl.

[Ag+] = x = 1.8 x 10^-8 M

Therefore, the best choice is B, 1.8 x 10^-8 M.

HCl Is Added to a Saturated AgCl Solution Until the [Cl-1]