дано
m(ppaKOH) = 56 g
W(KOH) = 10%
--------------------
V(SO2)-?
m(KOH) = 56*10% /100% = 5.6 g
2KOH+SO2-->K2SO3+H2O
M(KOH) = 56 g/mol
n(KOH) = m/M = 5.6 / 56 = 0.1 mol
2n(KOH) = n(SO2)
n(SO2) = 0.1 /2 = 0.05 mol
V(SO2) = n(SO2) * Vm = 0.05 *22.4 = 1.12 L
ответ 1.12 л