C2H5OH + 3O2 => (to) 2CO2 + 3H2O
0.5 1.5 1 (mol)
CO2 + Ca(OH)2 => CaCO3 + H2O
1 1 (mol)
nCaCO3 = 100/100 = 1 (mol)
30 ml rượu = 0.03 l rượu
mC2H5OHpt=0.5.46 =23 (g)
V = m/D = 23/0.8 =28.75 (ml) =0.02875 (l);
Dr = 0.02875.100/0.03 = 95,8(3) xấp xỉ 96o