дано
m(Na) = 15 g
η(H2)= 85%
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V практ (H2)-?
2CH3OH+2Na-->2CH3ONa+H2↑
M(Na) = 23 g/mol
n(Na) = m/M = 15 / 23 = 0.65 mol
2n(Na) = n(H2)
n(H2) = 0.65 / 2 = 0.325 mol
V теор (H2) =n*Vm = 0.325 * 22.4 = 7.28 L
V практ (H2) = V теор(H2)*η(H2) / 100% = 7.28 * 85% / 100% = 6.188 L
ответ 6.188 л
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Verified answer
дано
m(Na) = 15 g
η(H2)= 85%
------------------
V практ (H2)-?
2CH3OH+2Na-->2CH3ONa+H2↑
M(Na) = 23 g/mol
n(Na) = m/M = 15 / 23 = 0.65 mol
2n(Na) = n(H2)
n(H2) = 0.65 / 2 = 0.325 mol
V теор (H2) =n*Vm = 0.325 * 22.4 = 7.28 L
V практ (H2) = V теор(H2)*η(H2) / 100% = 7.28 * 85% / 100% = 6.188 L
ответ 6.188 л