Question

Refer to the diagram given below and write balanced equations with conditions, if any, for the following conversions P to S.

Answer 1

P: Preparation of hydrogen chloride

\[\ce{NaCl + H2SO4 ->NaHSO4 + HCl↑}\]

Q: Formation of iron(II) chloride

\[\ce{Fe + 2HCl(dil{.})->FeCl2 + H2↑}\]

R: Formation of ammonium chloride

\[\ce{NH3_{(g)} + HCl_{(g)} -> NH4Cl_{(s)}↑}\]

S: Formation of lead chloride

\[\ce{Pb(NO3)2_{(aq)} + 2HCl_{(dil{.})} -> PbCl2↓ + 2HNO3_{(aq)}}\]

Therefore, HCl can be prepared from sodium chloride and used to form iron(II) chloride, ammonium chloride and lead chloride.