The solublity of unknown salt MX_{n} is 2*10^{8}M and its solublity product is 4.32*10^{30}.Formula of the salt is?????

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1 Answers
Manish Shankar
·20081101 11:57:57
MX_{n} [eq] M^{n+}+nX^{}
S nS
Ksp=S(nS)^{n}=4.32*10^{30}
(n*2*10^{8})^{n}=4.32*10^{30}/(2*10^{8})=2.16*10^{22}
By trial and error you can find the answer
as there is 10^{8} is on the LHS and 10^{22} on the RHS, n=3 would be a good guess and it will give the answer
so formula is MX_{3}