1.
C2H2 \overset{(1))}{\rightarrow} C2H4 \overset{(2))}{\rightarrow} C2H5OH \overset{(3))}{\rightarrow} CH3COOH \overset{(5))}{\rightarrow} CH3COOCH3
2.
CH3COOH \overset{(1))}{\rightarrow} Co2 \overset{(2))}{\rightarrow} CaCO3 \overset{(3))}{\rightarrow} CaCl2