Напишите уравнения возможных реакций

1.CH3-CH2(NH2)-COOH + CH3-CH2-OH = CH3-CH2(NH2)-COOCH2-CH3 + H2O
2. CH3-CH2(NH2)-COOH + KOH = CH3-CH2(NH2)-COOK + H2O
3.CH3-CH2(NH2)-COOH + HCl = CH3-CH2(NH3Cl)-COOH
6.2CH3-CH2(NH2)-COOH+ 2Na = 2CH3-CH2(NH2)-COONa + H2