1.Mr(A)=36*2=72
n(C):n(H)=5:6*2=5:12
Mr(C5H12)=72
所以其分子式就是C5H12.
2.n(C)=n(CO2)=(44.88-15.84)g/44g/mol=0.66mol
n(H)=2n(H2O)=2*15.84g/18g/mol=1.76mol
Mr(B)=30*2=60
n(B)=13.2g/60g/mol=0.22mol
n(B):n(C):n(H)=0.22:0.66:1.76=1:3:8
設(shè)B分子式為:C3H8Ox
x=(60-12*3-8*1)/16=1
B:C3H8O