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CuCO3 (s) --> Cu^2+ (aq) + CO3^2- (aq)
s s s
Ksp = [Cu^2+][CO3^2-]
1X10^-10 = s x s
1X10^-10 = s kuadrat
1 x 10^-5 = s
s = M = 1 x 10^-5
V = 500 ml = 0,5 liter
n = M x V
=1 x 10^-5 x 0,5
= 1 x 10^-6
Mr CuCO3 = 63 + 12 + (3x16) = 75 + 48 = 123
n = massa/Mr
1 x 10^-6 = massa / 123
123 x 10^-6 = massa
1,23 x 10^-4 = massa
Jadi massa CuCO3 adalah 1,23 x 10^-4