Write condition and balanced chemical equation for synthesis of `SO_3` from `SO_2` in contact process. How `H_2SO_4` is prepared from `SO_3`?

State condition and reaction for synthesis of SO_3 from SO_2 in contact process. What is Oleum?

Write balanced chemical equation with conditions for the industrial manufacture of SO_3 from SO_2 by the contact process. How is H_2SO_4 prepared from the SO_2 produced?

Write with Condition & balanced equation the preparation of CO from oxalic acid.

Write with balanced chemical equation what will happen when a mixture of NaCl, MnO_2 and concentrat3ed H_2SO_4 is strongly heated.

Write the principle, with balanced chemical equations, of preparation of sodium carbonate by Solvay process?

Describe manufacture of H_(2)SO_(4) by contact process.

Write the conditions to maximise the yield of H_(2)SO_(4) by Contact process.

Write down the conditions and reaction of preparation of H_2SO_4 by contact process.

Writ down the balanced chemcial equation for the reaction of H_2S with aqueous solution of SO_2 and write the roles (oxidant/reductant) of the reactants in the reaction.

Write down the balanced chemical equation for the reaction of H_(2)S with aqueous solution of SO_(2) and write the roles, (oxidant/reductant) of the reactants in the reaction.