The concentration of SO4 2- in a saturated solution of Ag2SO4 is 1.40 x 10^-2 mol/L at a certain temperature. Calculate the Ksp for the compound at this temperature.

Question

(report to hundredths place in scientific notation)

Answer 1

Ag₂SO₄(s) <==> 2Ag⁺(aq) + SO₄^2-(aq)

Ksp = [Ag⁺]²[SO₄^2-]

Since [SO₄^2-] = 1.40x10_-2 M, the [Ag⁺] must be 2 x 1.40x10^-2 M = 2.80x10^-4 M

Ksp = (2.8x10^-4)²(1.40x10^-2)

Ksp = 1.10x10^-9