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

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

A

`537.6 mL`

B

`520.7 mL`

C

`433.6 mL`

D

`420.5 mL`

Text Solution

Verified by Experts

The correct Answer is:
A
Meq. of original `H_(2)SO_(4)=30xx1=30`
Meq. of `H_(2)SO_(4)` after passing `NH_(3)=30xx0.2=6`
`:.` Meq. of `H_(2)SO_(4)" lost "=30-6=24`
`:.` Meq. of `NH_2` passed = Meq. of `H_(2)SO_(4)` lost
`:." "(w)/(17)xx1000=24" "w_(NH_3) = 0.408 g`
`:.` Volume of `NH_3` at STP `=(22.4xx0.408)/(17)=0.5376` litre `= 537.6 mL`
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