Question

Sulphur trioxide can be obtained by which of the following:

विकल्प

• \[\ce{CaSO4 + C ->[\Delta]}\]

• \[\ce{Fe2(SO4)3 ->[\Delta]}\]

• \[\ce{S + H2SO4 ->}\]

• \[\ce{H2SO4 + PCl5 ->[\Delta]}\]

Answer 1

\[\ce{Fe2(SO4)3 ->[\Delta]}\]

Explanation:

\[\ce{Fe2(SO4)3 ->[\Delta] Fe2O3 + 3SO3}\]