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a)Calculate pH of saturated solution of dicalcium phosphate(CaHPO4) in water if its solubility is 3.16x10-4 m.
CaHPO4(aq)-> Ca^2+(aq) + HPO4^2-(aq)
Although phosphoric acid is a triprotic acid, consider only pKa''since pKa' and pKa''' will not contribute to this dissociation:
H2PO4^-(aq)->H+(aq)+ HPO4^2-(aq), pKa''=6.8
Assume that:
a)Calculate pH of saturated solution of dicalcium phosphate(CaHPO4) in water if its solubility is 3.16x10-4 m.
CaHPO4(aq)-> Ca^2+(aq) + HPO4^2-(aq)
Although phosphoric acid is a triprotic acid, consider only pKa''since pKa' and pKa''' will not contribute to this dissociation:
H2PO4^-(aq)->H+(aq)+ HPO4^2-(aq), pKa''=6.8
Assume that:
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Nestor RutherfordLv2
25 Apr 2019
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