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Chemistry

Ammonia reacts with sulphuric acid to give the fertilizer ammonium sulphate. Calculate the volume of ammonia [at s.t.p.] used to form 59 g of ammonium sulphate.
[N = 14, H = 1, S = 32, O = 16]

Stoichiometry

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Answer

2NH3+H2SO4⟶[NH4]2SO42(22.4 lit.)2[14+(4×1)]+32+(4×16)=132g\begin{matrix} 2\text{NH}3 & + & \text{H}2\text{SO}4 & \longrightarrow & [\text{NH}4]2\text{SO}4 \ 2(22.4 \text{ lit.}) & & & & 2[14 + (4 \times 1)] \ & & & & + 32 + (4 \times 16) \ & & & & = 132 \text{g} \end{matrix}

132 g of ammonium sulphate is produced by 2 x 22.4 lit of Ammonia

∴ 59 g of ammonium sulphate is produced by 2×22.4132\dfrac{2 \times 22.4}{132} x 59 = 20.02 lit. of Ammonia

Hence, 20.02 lit. of ammonia [at s.t.p.] is used to form 59 g of ammonium sulphate

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