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

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

Text Solution

Verified by Experts

mEq of original `H_(2) SO_(4) = 30 xx 1 = 30`
mEq of `H_(2) SO_(4)` after passing `NH_(3) = 30 xx 0.2 = 6`
`:.` mEq of `H_(2) SO_(4)` lost `= 30 - 6 = 24`
`:.` mEq of `NH_(3)` passed = mEq of `H_(2) SO_(4)` lost
`:' (W)/(17) xx 1000 = 24`
`:. W_(NH_(3)) = 0.408 g`
`:.` volume of `NH_(3)` of `STP = (22.4 xx 1.408)/(17)`
`0.5376 L = 537.6 mL`
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