Redox Reactions Question 9
Question 9 - 01 February - Shift 2
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.
(1) (A) is not correct but (R) is correct
(2) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
(3) Both (A) and (R) are correct and (R) is the correct explanation of $(\mathbf{A})$
(4) (A) is correct but (R) is not correct
Show Answer
Answer: (3)
Solution:
Formula: pH Calculation
$KOH$ absorb $CO_2$
So its concentration should be checked.
