дано
m (CxHyOz) =1,8 г
m(Co2)=3,96 г
m(H2o)=2,16 г
Д(H2)=30
СxHyOz-?
M(CxHyOz) = D(H2) * 30 = 2*30 = 60 g/mol
n(C) = n(CO2) = m/M = 3.96 / 44 = 0.09 mol
m(C) = n(C)*M(C) = 0.09*12 = 1.08 g
n(H) = 2*n(H2O) = 2* (m/M) = 2*(2.16 / 18) = 0.24 mol
m(H) = n(H)*M(H) = 0.24*1 = 0.24 g
m(O) = m(CxHyOz) - (m(C)+m(H)) = 1.8 - (1.08 + 0.24) = 0.48 g
n(O) = m(O) / M(O) = 0.48 / 16 = 0.03 mol
CxHyOz = 0.09 : 0.24 : 0.03 = 3: 8 : 1
C3H8O или C3H7OН
M(C3H7OH) = 12*3+1*7+16+1 = 60 g/mol
ответ ПРОПАНОЛ
дано
m (CxHyOz) =1,8 г
m(Co2)=3,96 г
m(H2o)=2,16 г
Д(H2)=30
СxHyOz-?
M(CxHyOz) = D(H2) * 30 = 2*30 = 60 g/mol
n(C) = n(CO2) = m/M = 3.96 / 44 = 0.09 mol
m(C) = n(C)*M(C) = 0.09*12 = 1.08 g
n(H) = 2*n(H2O) = 2* (m/M) = 2*(2.16 / 18) = 0.24 mol
m(H) = n(H)*M(H) = 0.24*1 = 0.24 g
m(O) = m(CxHyOz) - (m(C)+m(H)) = 1.8 - (1.08 + 0.24) = 0.48 g
n(O) = m(O) / M(O) = 0.48 / 16 = 0.03 mol
CxHyOz = 0.09 : 0.24 : 0.03 = 3: 8 : 1
C3H8O или C3H7OН
M(C3H7OH) = 12*3+1*7+16+1 = 60 g/mol
ответ ПРОПАНОЛ