Chemistry - Stoichiometry Question with Solution | TestHub

Preparation of ${\mathrm{Na}}_2{\mathrm{SnO}}_2$ involves the following set of reactions: [ $\mathrm{Sn}=119$ ]

(P)$\mathrm{Sn}+2\mathrm{HCI}\to {\mathrm{SnCl}}_2+{\mathrm{H}}_2$

(Q) ${\mathrm{SnCl}}_2+2\mathrm{NaOH}\to \mathrm{Sn}(\mathrm{OH}{)}_2+2\mathrm{NaCl}$

(R)$\mathrm{Sn}(\mathrm{OH}{)}_2+2\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{SnO}}_2+2{\mathrm{H}}_2\mathrm{O}$

If the percentage yield of reactions (P), (Q), and (R) are 25%, 50%, and 40%, respectively, calculate the mass of Sn (in kg) required to produce 19.7 kg of Na₂SnO₂.