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MisterVoprosman
@MisterVoprosman
July 2022
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визначте об'єм водню який виділиться при взаємодії етанолу масою 2.3г з натрієм
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Alexei78
Дано
m(C2H5OH) = 2.3 g
-----------------------------
V(H2)-?
2C2H5OH+2Na-->2C2H5ONa+H2
M(C2H5OH) = 46 g/mol
n(C2H5OH) = m/M = 2.3 / 46 = 0.05 mol
2n(C2H5OH) = n(H2)
n(H2) = 0.05 / 2 = 0.025 mol
V(H2) = n*Vm = 0.025 * 22.4 = 0.56 L
ответ 0.56 л
6 votes
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Answers & Comments
m(C2H5OH) = 2.3 g
-----------------------------
V(H2)-?
2C2H5OH+2Na-->2C2H5ONa+H2
M(C2H5OH) = 46 g/mol
n(C2H5OH) = m/M = 2.3 / 46 = 0.05 mol
2n(C2H5OH) = n(H2)
n(H2) = 0.05 / 2 = 0.025 mol
V(H2) = n*Vm = 0.025 * 22.4 = 0.56 L
ответ 0.56 л