1.

What happens when dilute sulphuric acid is treated with: a. Fe? b. CaF2?

Answer»

a. Dilute H2SO4 reacts with Fe which is below hydrogen in the electrochemical series, with the evolution of H2.

Fe (Iron) + H2SO(Sulphuric acid) → FeSO(Ferrous sulphate) + H(Hydrogen)

b. When H2SO4 is added to calcium fluoride, hydrogen fluoride is obtained. 

CaF2 (Calcium fluoride) + H2SO(Sulphuric acid) → CaSO4 (Calcium sulphate) + 2HF (Hydrogen flurode)



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