a) 2C3H7COOH+Mg--->(C3H7COO)2Mg+H2
6C3H7COOH+Al2O3--->2(C3H7COO)3Al+3H2O
C3H7COOH+KOH--->C3H7COOK+H2O
b) 2C5H11COOH+Fe--->(C5H11COO)2Fe+H2
2C5H11COOH+K2O--->2C5H11COOK+H2O
2C5H11COOH+Ca(OH)2--->(C5H11COO)2Ca+2H2O
c) 2CH3COOH+2K--->2CH3COOK+H2
2CH3COOH+Li2O--->2CH3COOLi+H2O
CH3COOH+NaOH--->CH3COONa+H2O