Помогите номера 1-3Очень надо

1. 2-метилпентановая кислота



4. 2СH-CH-CH(CH)-CH-COOH + 2Na = 2СH-CH-CH(CH)-CH-COONa + H

СH-CH-CH(CH)-CH-COOH + CHOH = СH-CH-CH(CH)-CH-COO-CH + HO

2СH-CH-CH(CH)-CH-COOH + Ba(OH) = (СH-CH-CH(CH)-CH-COO)Ba + 2HO

2СH-CH-CH(CH)-CH-COOH + KO = 2СH-CH-CH(CH)-CH-COOK + HO