дано
V(комната) = 90 m3
m(C2H5OH) = 2 kg
V(H2O) -?
V(CO2) - ?
C(CO2)-?
C2H5OH+3O2-->2CO2+3H2O
M(C2H5OH) = 46 kg/kmol
n(C2H5OH) = m/M = 2 / 46 = 0.043 kmol
n(C2H5OH) = 3n(H2O)
n(H2O) = 3*0.043
n(H2O) = 0.129 kmol
M(H2O) = 18 kg/kmol
m(H2O) = n*M = 0.129 * 18 = 2.322 kg = 2322 g
p(H2O) = 1 g/cm3
V(H2O) = m(H2O) / p(H2O) = 2322 / 1 = 2322 L
n(C2H5OH) = 2n(CO2)
n(CO2) = 0.043 * 2 = 0.086 kmol
V(CO2) = n(CO2) * Vm = 0.086 * 22.4 =1.9264 m3
C(CO2) = V(CO2) / V(комн) * 100% = 1.9264 / 90 * 100% = 2.14%
ответ 2322 г , 1.9264 м3 , 2.14%
Объяснение:
дано
V(комната) = 90 m3
m(C2H5OH) = 2 kg
V(H2O) -?
V(CO2) - ?
C(CO2)-?
C2H5OH+3O2-->2CO2+3H2O
M(C2H5OH) = 46 kg/kmol
n(C2H5OH) = m/M = 2 / 46 = 0.043 kmol
n(C2H5OH) = 3n(H2O)
n(H2O) = 3*0.043
n(H2O) = 0.129 kmol
M(H2O) = 18 kg/kmol
m(H2O) = n*M = 0.129 * 18 = 2.322 kg = 2322 g
p(H2O) = 1 g/cm3
V(H2O) = m(H2O) / p(H2O) = 2322 / 1 = 2322 L
n(C2H5OH) = 2n(CO2)
n(CO2) = 0.043 * 2 = 0.086 kmol
V(CO2) = n(CO2) * Vm = 0.086 * 22.4 =1.9264 m3
C(CO2) = V(CO2) / V(комн) * 100% = 1.9264 / 90 * 100% = 2.14%
ответ 2322 г , 1.9264 м3 , 2.14%
Объяснение: