Question

Question #130a3

Answer 1

`NaHSO_4` produces `H^+` ion in its aqueous solution, which combines with `CO_3^2-` ions (formed on ionisation of `Na_2CO_3`) to form `H_2CO_3`,an unstable weak acid.This acid readily decomposes to form `CO_2` gas.

`2NaHSO_4->2Na^+ + 2H^+ + 2SO_4^"2-"`

`Na_2CO_3->2Na^+ + CO_3^"2-"`

`CO_3^"2-" + 2H^+ -> H_2CO_3`

`H_2CO_3->H_2O + CO_2`

Equation of the net reaction

`Na_2CO_3+2NaHSO_4->2Na_2SO_4+H_2O+CO_2`