Question

Which of the following compounds are readily soluble in water?

  (a) CaSO4
  (b) MgSO4
  (c) BaSO4
  (d) SrSO4.
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Answer 1

Answer:

both CaSO4 and MgSo4 are water soluble

Answer 2

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Which of the following compounds are readily soluble in water?

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(b) MgSO4

MgSO4 are readily soluble in water due to their high hydration enthalpies while CaSO4, SrSO4 and BaSO4 are insoluble because of their low hydration enthalpies.