A few drops of 1.0 M AgNO3 were added to a saturated solution of AgCl (Ksp = 1.8 × 10–10), increasing the silver ion concentration from 1.3 × 10–5 M to 2.8 × 10–2 M. What is the new concentration of the chloride ion? (1 point)
(A) 2.8 × 10–2 M

(B) 2.3 × 10–7 M

(C) 6.4 × 10–9 M

(D) 5.4 × 10–4 M

Question

A few drops of 1.0 M AgNO3 were added to a saturated solution of AgCl (Ksp = 1.8 × 10–10), increasing the silver ion concentration from 1.3 × 10–5 M to 2.8 × 10–2 M.  What is the new concentration of the chloride ion?	(1 point)
	(A)		2.8  × 10–2 M

	(B)		2.3 × 10–7 M

	(C)		6.4  × 10–9 M

	(D)		5.4  × 10–4 M

jfraser · Answer

keep in mind what the KSP really means: the product of the concentrations of the two ions must be CONSTANT.

If the [Ag] is increased, what must happen to the [Cl-] in order to maintain the value of the KSP?