December 1, 2015

Homework Help: chemistry

Posted by roseanne on Saturday, November 27, 2010 at 6:37pm.

Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8

i already asked this but im confused about one of the steps.

Ksp = (x)(2x)^2 = 4x^3 = 3.3X10^-8

x = solubility = 0.00202M.

but i dont understand do i substitute the x in 4x^3 3.3X10^-8 and then divide by 3.3X10^-8. or am i wrong?

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