Answers: 3
will be precipitated as the hydroxide salt.
has precipitated out , 24% remains out.
![[Mg^{2}^{+}] =\frac{24}{100}\times 0.052](/tpl/images/1200/9004/3cfbf.png)
![Ksp = [Mg^2^+][OH^-]](/tpl/images/1200/9004/4a0be.png)
![8.9\times 10^-^1^2= 1.248\times10^-^2\times[OH]^-](/tpl/images/1200/9004/8a6a7.png)
![[OH]^- = 7.131\times 10^-^1^0](/tpl/images/1200/9004/e943a.png)
![[H^+]=\frac{Kw}{[OH]^-}](/tpl/images/1200/9004/234a2.png)
( where Kw is the ionic product of the water)
![pH=-Log[H^+]](/tpl/images/1200/9004/3ca39.png)
![-Log[1.402\times10^-^5]](/tpl/images/1200/9004/c76b6.png)
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The concentration of Mg2+ in seawater is 0.052 M. At what pH will 76% of the Mg2+ be precipitated as...
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