Question

Question #11541

Answer 1

`5.3 × 10^-4 "M"`

Explanation:

`Mg(OH)_2 rightleftharpoons Mg^(2+) + 2OH^-`

`"K"_"sp" = ["Mg"^(2+)]["OH"^-]^2`

`"K"_"sp" = x × (2x)^2 = 4x^3`

`x = ("K"_"sp"/4)^(1/3) = ((6 × 10^-10)/4)^(1/3) = 5.3 × 10^-4 "M"`