In formic acid and boric acid which acid can directly titrated with sodium hydroxide

Boric acid cannot be titrated directly with NaOH (Sodim Hydroxide) because the end point is not sharp it undergoes excessive hydrolysis to give break H3BO3 and NaOH

Reaction:- 

H3BO3 + NaOH ------ Na(B(OH)4)------NaBO2 + 2H2O

Formic and oxalic acid are samething both having same COOH group

Oxalic acid and formic acid directly titrated with NaOH by using Acid-Base titration with the help of the phenopthalein indicator which change the color Colorless to Pink. 

       So Boric acid can titrated with the help of polyhroxy compound i.e- Catechol,Manitol. 

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