$\mathrm{SO_3}$ is absorbed in 98% $\mathrm{H_2SO_4}$ instead of water because $\mathrm{H_2SO_4}$—

Question

Accepted Answer

i, ii and iii

Answer

i

Answer

i and iii

Answer

ii and iii

SO3\mathrm{SO_3}SO3​ is absorbed in 98% H2SO4\mathrm{H_2SO_4}H2​SO4​ instead of water because H2SO4\mathrm{H_2SO_4}H2​SO4​—