Question #f076a

1 Answer
Jul 2, 2014

You always start with the balanced chemical equation, an ICE table, and the #K_(sp)# expression.

The balanced chemical equation is

BaSO₄(s) ⇌ Ba²⁺(aq) + SO₄²⁻(aq)
I/mol·L⁻¹: -; 0; 0
C/mol·L⁻¹: -; +#x#; +#x#
E/mol·L⁻¹: -; #x#; #x#

#K_(sp)# = [Ba²⁺][ SO₄²⁻] = #x × x = x^2# = 1.07 ×10⁻¹⁰

#x = √(1.07 ×10⁻¹⁰)# = 1.03 × 10⁻⁵

Solubility = #x# mol/L = 1.03 × 10⁻⁵ mol/L

Hope this helps.