дано
m(ppa H2SO4) = 300 g
W(H2SO4) = 49%
V(H2)-?
m(H2)-?
m(H2SO4) = 300 * 49% / 100% = 147 g
Zn+H2SO4-->ZnSO4+H2
M(H2SO4) = 98 g/mol
n(H2SO4) = m/M = 147 / 98 = 1.5 mol
n(H2SO4) = n(H2) = 1.5 mol
V(H2) =n*Vm = 1.5 * 22.4 = 33.6 l
M(H2) = 2 g/mol
m(H2) = n*M = 1.5 * 2 = 3 g
ответ 33.6 л, 3 г
дано
m(ppa H2SO4) = 300 g
W(H2SO4) = 49%
V(H2)-?
m(H2)-?
m(H2SO4) = 300 * 49% / 100% = 147 g
Zn+H2SO4-->ZnSO4+H2
M(H2SO4) = 98 g/mol
n(H2SO4) = m/M = 147 / 98 = 1.5 mol
n(H2SO4) = n(H2) = 1.5 mol
V(H2) =n*Vm = 1.5 * 22.4 = 33.6 l
M(H2) = 2 g/mol
m(H2) = n*M = 1.5 * 2 = 3 g
ответ 33.6 л, 3 г