Chemistry - Redox Reactions Question with Solution | TestHub

In acidiic medium Zn reduces nitrate ion to${\mathrm{N}\mathrm{H}}_4^{+}$ion according to the reaction

$\text{Zn}\text{+}{\text{NO}}_3^{-}\to {\text{Zn}}^{\text{2+}}\text{+}{\text{NH}}_{\text{4}}^{\text{+}}\text{+}{\text{H}}_{\text{2}}\text{O }$(unbalanced)

How many moles of HCl are required to reduce half a mole of${\mathrm{N}\mathrm{a}\mathrm{N}\mathrm{O}}_3$completely? Assume the availability of sufficient Zn.