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ICSE Class 10 Chemistry Question 34 of 62

Study of Compounds — Sulphuric Acid — Question 36

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Question

Question 1(2013)

State one appropriate observation for : conc. H2SO4 is added to a crystal of hydrated copper sulphate.

Answer

The blue coloured hydrous copper sulphate changes to white anhydrous copper sulphate as the water of crystallization is removed.

CuSO4.5H2O→Conc. H2SO4CuSO4 [White Anhydrous]+5H2O\text{CuSO}_4\text{.5H}_2\text{O} \xrightarrow{\text{Conc. H}_2\text{SO}_4} \text{CuSO}_4 \text{ [White Anhydrous]} + 5\text{H}_2\text{O}