6(a)
Give a balanced chemical equation for each of the following:
(i) Action of conc. Nitric acid on Sulphur.
(ii) Catalytic oxidation of Ammonia.
(iii) Laboratory preparation of Nitric acid.
(iv) Reaction of Ammonia with Nitric acid.
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(i) S + 6HNO3 [conc.] ⟶ H2SO4 + 2H2O + 6NO2
(ii) $4\text{NH}_3 + 5\text{O}_2 \xrightarrow[800 ^{\circ} \text{C}]{\text{Pt.}} \text{4NO} + \text{6H}_\text{2}\text{O} + \Delta$
(iii) KNO3 + H2SO4 [conc.] $\xrightarrow{\lt 200 ^{\circ}\text{C}}$ KHSO4 + HNO3
(iv) NH3 + HNO3 ⟶ NH4NO3