Respuesta :
Answer:
The Ksp of the magnesium phosphate is 2.53x10⁻¹⁰
Explanation:
The molar mass of magnesium phosphate is:
[tex]MMmagnesium-phosphate=(3*MMMg)+(2*MMP)+(8*MMO)=(3*24.305)+(2*30.97)+(8*15.99)=262.775g/mol[/tex]
The number of moles is:
[tex]n_{magnesium-phosphate} =\frac{1.24}{262.775} =4.72x10^{-3} moles[/tex]
The molarity is:
[tex]M=\frac{4.72x10^{-3} }{1} =4.72x10^{-3} M[/tex]
The dissociation of magnesium phosphate is:
Mg₃(PO₄)₂ = 3Mg²⁺ + 2PO₄³⁻
The Ks is:
[tex]K_{s} =[Mg^{2+}]^{3}[PO_{4}^{3-} ]^{2} =(3s)^{3} (2s)^{2}[/tex]
Where
s = solubility of ions = 4.72x10⁻³
Replacing
[tex]K_{s} =(3*4.72x10^{-3} )^{3} (2*4.72x10^{-3} )^{2} =2.53x10^{-10}[/tex]
