The strength of an aqueous NaOH solution is most accurately determined by titrating:
(Note: consider that an appropriate indicator is used)
Option: 1 Aq.NaOH in a pipette and aqueous oxalic acid in a burette
Option: 2 Aq.NaOH in a volumetric flask and concentrated in a conical flask
Option: 3 Aq.NaOH in a burette and concentrated in a conical flask
Option: 4 Aq.NaOH in a burette and aqueous oxalic acid in a conical flask
As we have learnt,
To calculate the strength of NaOH, it is titrated against oxalic acid. For this purpose, NaOH is kept in a burette and oxalic acid in a conical flask.
Therefore, Option(4) is correct.
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