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0.4 g of polybasic acid HnA (all the hyd...

0.4 g of polybasic acid HnA (all the hydrogens are acidic) requries 0.5 g of NaOH for complete neutralisation. The number of replaceable hydrogen atoms and the molecular weight of A would be (Mw of `acid=96)`

A

1,95

B

2,94

C

3,93

D

4,92

Text Solution

Verified by Experts

The correct Answer is:
C
eq. of Acid =eq. of base
`nxx0.4/96=0.5/40 implies n=1/80xx96/0.4=96/32=3`
`:.` At. Wt. of A=96-3=93
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