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What volume at STP of ammonia gas will b...

What volume at `STP` of ammonia gas will be required to be passed into `30 mL` of `1N H_(2) SO_(4)` solution to bring down the acid normality to `0.2 N`?

A

(a)`556.5 mL`

B

(b)`480.5 mL`

C

(c )`537.6 mL`

D

(d)`438.4 mL`

Text Solution

Verified by Experts

The correct Answer is:
c

Meq. of `H_(2)SO_(4)` (original) `=30xx1=30`
Meq. of `H_(2)SO_(4)` after passing `NH_(3)=30xx0.2=6`
Meq. of `H_(2)SO_(4)` reacted =Meq. of `NH_(3)`
`=30-6=24`
`:. w_(NH_(3))/17xx1000=24, w_(NH_(3))=0.408 g`
`:. V_(NH_(3))` at `STP=0.408/17xx22.4=0.5376 L`
`=537.6 mL`
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