Ответ:
дано
m(ppa HCL) = 146 g
W(HCL) = 10%
-----------------------
V(H2)-?
m(HCL) = 146 * 10% / 100% = 14.6 g
2Al+6HCL-->2AlCL3+3H2
M(HCL) = 36.5 g/mol
n(HCL) = m/M = 14.6 / 36.5 = 0.4 mol
6n(HCL) = 3n(H2)
n(H2) = 3*0.4 / 6 = 0.2 mol
V(H2) = n*Vm = 0.2*22.4 = 4.48 L
ответ 4.48 л
Объяснение: