Rozpuszczalność PbI2 wynosi 1,5*10 do potęgi -3 mol/dm3. Obliczyć iloczyn rozpuszczalności PbI2.
PbI2---->Pb²⁺ + 2 I⁻
[Pb²⁺] = x
[I⁻] = 2x
Ir = [Pb²⁺]*[I⁻]²
Ir = x*(2x)²
Ir = 4x³
Ir = 4*(1,5*10⁻³)³
Ir = 1,35*10⁻⁸
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PbI2---->Pb²⁺ + 2 I⁻
[Pb²⁺] = x
[I⁻] = 2x
Ir = [Pb²⁺]*[I⁻]²
Ir = x*(2x)²
Ir = 4x³
Ir = 4*(1,5*10⁻³)³
Ir = 1,35*10⁻⁸