The reaction between acetic acid (CH3COOH) and methylamine (CH3NH2) would result in the formation of methylammonium acetate.

CH3COOH + CH3NH2 → CH3NH3+CH3COO-

The reaction between sodium acetate (H2N-CH-COONa) and sulfuric acid (H2SO4) would result in the formation of acetic acid and sodium sulfate.

H2N-CH-COONa + H2SO4 → CH3COOH + Na2SO4