(1)C18 H32 O2 设B的分子式为(C9 H16 O)n,则(16*9+1*16+16*1)*n=280.解方程得n=2.
(2)CH3-(CH2)16-COOH 硬脂酸 甘油分子式C3 H8 O3,A水解需要3分子水,故有
C57 H106 O6+3*(H2 O)=C18 H32 O2+C3 H8 O3+2*C.解得C的分子式为C18 H36 O2.根据题意其为直链,可得结构式.
(3) 羧酸类:CH3-(CH2)3-COOH (CH3)2-CH-CH2-COOH (CH3)3C-COOH
脂类:1.甲酸酯:HCO-O-CH2-(CH2)2-CH3 HCO-O-CH2-CH(CH3)2
HCO-O-CH(CH3)-C2H5 HCO-O-C(CH3)3
2.乙酸酯:CH3-CO-O-CH2-CH2-CH3 CH3-CO-O-CH(CH3)2
3.丙酸酯:CH3-CH2-CO-O-CH2-CH3
4.丁酸酯:CH3-(CH2)2-CO-O-CH3 (CH3)2-CH-CO-O-CH3