The minimum concentration of AgPO4 that will cause precipitation of Ag3PO4 is [tex]5.64*10^-^5M[/tex]
Data;
- Ksp of Ag3PO4 = 1.8*10^-18
- concentration of Na3PO4 = 1.0*10^-5 M
The KSP value of the Precipitate
[tex]ksp = [Ag]^3[PO_4][/tex]
The ksp value of [tex]AgPO_4 = 1.8*10^-^1^8\\[/tex]
Let's substitute the values and solve for the cation
[tex]1.8*10^-^1^8= [Ag]^3[1.0*10^-^5]\\\\[/tex]
This becomes
[tex][Ag]^3=\frac{1.8*10^-^1^8}{1.0*10^-^5}\\ \\[/tex]
[tex][Ag]=\sqrt[3]{1.8*10^-^1^3}\\\\[/tex]
[tex][Ag] = 5.64 * 10 ^-5M[/tex]
From the above calculation, we can say that the minimum concentration of AgPO4 that will cause precipitation of Ag3PO4 is 5.64*10^-5M
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