Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : An aqueous solution of KOH when for volumetric analysis, its concentration sho

Question

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : An aqueous solution of $KOH$ when for volumetric analysis, its concentration should be checked before the use.

Reason (R) : On aging, $KOH$ solution absorbs atmospheric ${CO}_{2}$ .

In the light of the above statements, choose the correct answer from the options given below.

TestHub · Accepted Answer

KOH absorb CO 2 based on the following reaction: CO 2 ( g ) + 2 KOH ( aq ) → K 2 CO 3 ( aq ) + H 2 O ( l ) Thus, concentration of Carbon dioxide decreases over time, prior to volumetric analysis concentration of potassium hydroxide should be checked.

Chemistry - Redox Reactions Question with Solution | TestHub

Options:

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