Chemistry Tuition Singapore A Level H2 H1 Chemistry Tuition – Solubility

Which one of the following best explains why barium hydroxide has a higher solubility than magnesium hydroxide?

A      The hydroxide ion is a very small anion.

B      The charge density of barium ions is smaller than that of magnesium ions.

C      The hydration of barium ions is more exothermic than that of magnesium ions.

D      The lattice energy of barium hydroxide is less exothermic than that of magnesium hydroxide.

Answer (D)

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