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Zanzabum
4 years ago
14

Determine the molar solubility of pbso4 in pure water. ksp (pbso4) = 1.82 × 10-8.

Chemistry
1 answer:
OLga [1]4 years ago
3 0
When PbSO₄ is added it dissociates as follows
PbSO₄ --> Pb²⁺ + SO₄²⁻
molar solubility is the number of moles of solute that can be dissolved in 1 L of solution 
if molar solubility of PbSO₄ is X, then molar solubility of Pb²⁺ is X and SO₄²⁻ is X
the formula for ksp is as follows 
ksp - solubility product constant
ksp = [Pb²⁺][SO₄²⁻]
ksp = X * X 
ksp = X²
ksp = 1.82 x 10⁻⁸ 
X² = 1.82 x 10⁻⁸ 
X = 1.35 x 10⁻⁴ M
molar solubility of PbSO₄ is 1.35 x 10⁻⁴ M
answer is b.
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