How many moles of Ba3(PO4)2 will be formed by the reaction of 5 moles of BaCl2 and 3 moles of Na3(PO4).
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 used 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 :