When acid is added: Molecular: NaCHO2(aq) + H+(aq) => HCHO2(aq) + Na+(aq) Ionic: CHO2-(aq) + H+(aq) => HCHO2(aq) When base is added: Molecular: HCHO2(aq) + NaOH(aq) => NaCHO2(aq) + H2O(l) Ionic: HCHO2(aq) + OH-(aq) => CHO2-(aq) + H2O(l) Solution When acid is added: Molecular: NaCHO2(aq) + H+(aq) => HCHO2(aq) + Na+(aq) Ionic: CHO2-(aq) + H+(aq) => HCHO2(aq) When base is added: Molecular: HCHO2(aq) + NaOH(aq) => NaCHO2(aq) + H2O(l) Ionic: HCHO2(aq) + OH-(aq) => CHO2-(aq) + H2O(l).