The balanced chemical equation for the precipitation reaction of cacl2 and cs3po4 in an aqueous solution is:
3Ca²⁺(aq) + 2PO₄³⁻(aq) → Ca₃(PO4)₂(s)
The insoluble salts Ca₃(PO4)₂ and CsCl are created when the calcium ion in CaCl₂ interacts with the phosphate ion in Cs₃PO₄. CaCl₂(aq) + CsO₄(aq) Ca₃(PO4)₂(s) + CsCl.
The unbalanced reaction is:
CaCl₂(aq) + Cs₃PO₄(aq) → Ca₃(PO4)₂(s) + CsCl(aq)
To balance the calcium:
3CaCl₂(aq) + Cs₃PO₄(aq) → Ca₃(PO4)₂(s) + CsCl(aq)
The chlorides:
3CaCl₂(aq) + Cs₃PO₄(aq) → Ca₃(PO4)₂(s) + 6CsCl(aq)
And the Cs:
3CaCl₂(aq) + 2Cs₃PO₄(aq) → Ca₃(PO4)₂(s) + 6CsCl(aq)
This is the balanced reaction, the ionic equation is:
3Ca²⁺(aq) + 6Cl⁻(aq) + 6Cs⁺(aq) + 2PO4³⁻(aq) → Ca₃(PO4)₂(s) + 6Cs⁺(aq) + 6Cl⁻(aq)
Subtracting the ions that don't react:
3Ca²⁺(aq) + 2PO4³⁻(aq) → Ca3(PO4)2(s)
This is the net ionic equation
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