Chemistry - Redox Reactions Question with Solution | TestHub

$\mathrm{SOC}{\mathrm{l}}_2$ + $2{\mathrm{H}}_2\mathrm{O}$ $\to$ ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_3$ + 2HCl. So 0.02 mol gives 0.02 mol ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_3$ (0.2 M in 100 ml - (a) true) and 0.04 mol $\mathrm{HCl}$ (0.4 M - (b) true). (c) 20 ml contains 4 mmol ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_3$ + 8 mmol $\mathrm{HCl}$ = 16 mmol ${\mathrm{H}}^{+}$; 40 ml $x$ 0.4 M $\mathrm{NaOH}$ = 16 mmol - true. (d) 50 ml contains 0.02 mol $\mathrm{C}{\mathrm{l}}^{-}$ $\to$ 0.02 mol $\mathrm{AgCl}$ = 0.02 $x$ 143.5 = 2.87 g - true. All four are correct.