Identify the type of the following reaction of carbon compounds.
a. CH3 -CH2 -CH2-OH → CH3 -CH2 -COOH
b. CH3 -CH2 -CH3 → 3CO2 + 4H2O
c. CH3 -CH = CH -CH3 + Br2 → CH3 -CHBr - CHBr -CH3
d. CH3 -CH3 + Cl2 → CH3 -CH2 -Cl + HCl
e. CH3 -CH2 -CH2 -CH2 -OH → CH3 -CH2 -CH=CH2 + H2O
f. CH3 -CH2 -COOH + NaOH → CH3 -CH2 -COO - Na+ + H2O
g. CH3 -COOH + CH3 -OH → CH3 -COO- CH3 + H2O