дано
m(изв.)= 150 g
w(CaCO3) = 80%
V пр.(CO2) = 25L
----------------------
η(CO2)-?
m чист.(CaCO3) = 150 * 80% / 100% = 120 g
CaCO3-->CaO+CO2
M(CaCO3) = 100 g/mol
n(CaCO3) = m/M = 120 / 100 = 1.2 mol
n(CaCO3) = n(CO2) = 1.2 mol
V теор. (CO2) = n*Vm = 1.2 * 22.4 = 26.88L
η(CO2) = V пр.(CO2) / V теор.(CO2) * 100% = 25 / 26.88 * 100% = 93 %
ответ 93 %
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Verified answer
дано
m(изв.)= 150 g
w(CaCO3) = 80%
V пр.(CO2) = 25L
----------------------
η(CO2)-?
m чист.(CaCO3) = 150 * 80% / 100% = 120 g
CaCO3-->CaO+CO2
M(CaCO3) = 100 g/mol
n(CaCO3) = m/M = 120 / 100 = 1.2 mol
n(CaCO3) = n(CO2) = 1.2 mol
V теор. (CO2) = n*Vm = 1.2 * 22.4 = 26.88L
η(CO2) = V пр.(CO2) / V теор.(CO2) * 100% = 25 / 26.88 * 100% = 93 %
ответ 93 %