Acetylene is passed through dilute `H_2SO_4` solution (20%) containing 1% `HgSO_4` at `60-80^@C`.

Acetylene gas is passed through alkaline KMnO_4 solution .

Acetylene is passed through ammoniacal Cu_2Cl_2 solution.

H_(2) gas is passed through CuSO_(4) solution

Current of air is passed through a dilute solution of KCN containing gold

F_(2) gas is passed through 2% NaOH solution.

Propyne is passed through 20% H_2SO_4 in presence of Hg^(2+) .

1 (N) H_2SO_4 solution contains how many moles H_2SO_4 :

…………….is obtained when 2-butyne is passed through a mixture of 20% H_2SO_4 and 1% HgSO_4 .

A aqueous solution of NaCl on electrolysis gives H_(2)(g), Cl_(2)(g) , and NaOH according to the reaction : 2Cl^(-)(aq)+2H_(2)Orarr 2OH^(-)(aq)+H_(2)(g)+Cl_(2)(g) A direct current of 25A with 62% efficiency is passed through 20 L NaCl solution ( 20% by weight). (1) Give the reaction occurring at anode and cathode.

What happens when H_2O_2 solution is added to KI solution containing dilute H_2SO_4 ?