Question

Compound A is a colourless, crystalline, hydrated salt of magnesium. On heating it becomes an
anhydrous salt. The number of water molecules lost by compound A is equal to number of water
molecules present in green vitriol on heating.
i) Identify compound A
ii) Give the chemical equation for this heating reaction PTA-2​

Answer 1

Explanation:

(i) Epsom

(ii)It is clear that it has 7 molecules of water - So, the given magnesium salt A loses 7 water of crystallisation on heating. - The colourless crystalline magnesium salt with 7 water of crystallisation is Epsom salt.

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