The strength of an aqueous NaOH solution...

The strength of an aqueous NaOH solution is most accurately determined by titrating: (Note: consider that an appropriate indicator is used)

Aq. NaOH in a volumetric flask and concentrated `H_(2)SO_(4)` in a conical flask

Aq. NaOH in a burette and oxalic acid in a conical flask

Aq. NaOH in a burette and concentrated `H_(2)SO_(4)` in a conical flask

Aq. NaOH in a volumetric flask and concentrated `H_(2)SO_(4)` in a conical flask

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The correct Answer is:

Oxalic acid is a primary standard solution while `H_(2)SO_(4)` is a secondary standard solution.

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