дано
m(Al) = 108 g
η(H2) = 80%
V пр (H2)-?
2Al+3H2SO4-->Al2(SO4)3+3H2
M(Al) = 27 g/mol
n(Al) = m/M = 108 / 27 = 4 mol
2n(AL) = 3n(H2)
n(H2) = 3*4 / 2 = 6 mol
V теор (H2)= n*Vm = 6*22.4 = 134.4 L
Vпр (H2) = Vтеор (H2)*η(H2) / 100% = 134.4 * 80% / 100% = 107.52 L
ответ 107.52 л
дано
m(Al) = 108 g
η(H2) = 80%
V пр (H2)-?
2Al+3H2SO4-->Al2(SO4)3+3H2
M(Al) = 27 g/mol
n(Al) = m/M = 108 / 27 = 4 mol
2n(AL) = 3n(H2)
n(H2) = 3*4 / 2 = 6 mol
V теор (H2)= n*Vm = 6*22.4 = 134.4 L
Vпр (H2) = Vтеор (H2)*η(H2) / 100% = 134.4 * 80% / 100% = 107.52 L
ответ 107.52 л