Refer to the diagram given below and write balanced equations with conditions, if any, for the following conversions P to S.
P — NaCl+H2SO4→<200°CNaHSO4+HCl [g]\text{NaCl} + \text{H}_2\text{SO}_4 \xrightarrow{\lt 200 \degree\text{C}} \text{NaHSO}_4 + \text{HCl [g]}NaCl+H2SO4<200°CNaHSO4+HCl [g] ↑
Q — Fe + 2HCl (dil.) ⟶ FeCl2 + H2 [g]
R — NH4OH + HCl (dil.)⟶ NH4Cl + H2O
S — PbO2+4HCl→ΔPbCl2+2H2O+Cl2\text{PbO}_2 + 4\text{HCl} \xrightarrow{\Delta} \text{PbCl}_2 + 2\text{H}_2\text{O} + \text{Cl}_2PbO2+4HClΔPbCl2+2H2O+Cl2 ↑
