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An aqueous solution containing 6.5 g of ...

An aqueous solution containing `6.5` g of NaCl of `90%` purity was subjected to electrolysis. After the complete electrolysis, the solution was evaporated to get solid NaOH. The volume of 1 M acetic acid required to neutralise NaOH obtained above is

A

`2000 cm^(3)`

B

`100 cm^(3)`

C

`200 cm^(3)`

D

`1000 cm^(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Weight of NaCl `= 6.5 xx (90)/(100) =5.85 g`
No. of equivalents of NaCl
` = ("Wt. of NaCl")/("Mol.mass of NaCl")= (5.85)/(58.5) = 0.1`
No. of equivalents of NaOH obtained =0.1
`therefore N_(NaOH) xx V_(NaOH) = N_(CH_(3)COOH) xx V_(CH_(3)COOH)`
` rArr 0.1 xx 1000 = 1 xx V_(CH_(3)COOH)`
`rArr V_(CH_(3)COOH) = 10 cm^(3)`
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