Ammonia reacts with sulphuric acid to give the fertilizer ammonium sulphate.Calculate the volume of ammonia at Standard Temperature Pressure to form 30g of ammonium sulpahte.

10.18L

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20.18L

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16.18L

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18.18L

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Solution

The correct option is A
10.18L

The reaction of ammonia and sulphuric acid would look something as below:

$2 N H_{3} + H_{2} S O_{4} ⟶ (N H_{4})_{2} S O_{4}$

We know that at STP 1 mole of gas takes 22.4L volume,Since in our case we need 2 moles of ammonia hence it consumes 44.8L of volume.

Now we know that 132g of ammonium sulphate requires 44.8L of ammonia.

S0 30g of ammonia sulphate would require,

$A m m o n i a v o l u m e = \frac{(44.8) \times (R e q u i r e d q u a n t i t y o f a m m o n i u m s u l p h a t e)}{132}$
Substituting in the above formula we find 10.181L.

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