if 200. ml of 0.60 m mgcl2(aq) is added to 400. ml of distilled water, what is the concentration of mg2 (aq) in the resulting solution? (assume volumes are additive).

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explanation:

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the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l