Determine the concentration of each of the individual ions in a 0.650 M K2SO4 solution.

Question

 K2SO4 is a strong electrolyte. Determine the concentration of each of the individual ions in a 0.650 M K2SO4 solution. 

[K+]= ?M

[ SO2-/4]= ?M

Answer 1

As a strong electrolyte, K₂SO₄ will dissociate completely into the 2 component ions:

K₂SO₄ --> 2K⁺ + SO₄^2- (1 mole K₂SO₄ produces 2 moles K⁺ and 1 mole SO₄^2-)

Concentration of each ion:

[K⁺] = 2 x 0.650 M = 1.300 M

[SO₄^2-] = 1 x 0.650 M = 0.650 M

Hope that helps!