The strength of an aqueous NaOH solution is m | vedclass

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(D) The strength of a base like $NaOH$ is determined by titration against a primary standard acid. Oxalic acid $(H_{2}C_{2}O_{4} \cdot 2H_{2}O)$ is a

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

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(D) The strength of a base like $NaOH$ is determined by titration against a primary standard acid. Oxalic acid $(H_{2}C_{2}O_{4} \cdot 2H_{2}O)$ is a primary standard,meaning it can be weighed accurately to prepare a solution of known concentration. Strong acids like $H_{2}SO_{4}$ are not primary standards because they are hygroscopic and their concentration changes over time. In a titration,the solution with the known concentration (standard solution) is typically placed in the burette,but for $NaOH$ titration,it is standard practice to place the $NaOH$ solution in the burette and the primary standard oxalic acid solution in the conical flask. Therefore,the correct setup is $NaOH$ in the burette and aqueous oxalic acid in the conical flask.

The strength of an aqueous $NaOH$ solution is most accurately determined by titrating it against a standard solution of oxalic acid. (Note: consider that an appropriate indicator is used)

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