Chemistry · Nitrogen Containing Organic Compounds

JEE Advanced 2020 — Paper 1 — Question 27

Aluminium reacts with sulfuric acid to form aluminium sulfate and hydrogen. What is the volume of hydrogen gas

in litre (L) produced at 300 K and 1.0 atm pressure, when 5.4 g of aluminium and 50.0 mL of 5.0 M sulfuric acid are

combined for the reaction? (Use molar mass of aluminium as $27.0 \mathrm{~g} \mathrm{~mol}^{-1}, \mathrm{R}=0.082 \mathrm{~atm} \mathrm{~L} \mathrm{~mol}^{-1}$

$\mathrm{~K}^{-1}$ )

Answer: 6.15

Numerical answer — enter this value.

Step-by-step solution

2\text{Al} + 3\text{H}_2\text{SO}_4 \xrightarrow{\text{(LR)}} \text{Al}_2(\text{SO}_4)_3 + 3\text{H}_2(\text{g})

\frac{5.4}{27} = 0.2 \text{ mol}

0.25 \text{ mol}

V_{\text{H}_2} = \frac{0.25 \times 0.0821 \times 300}{1} = 6.1575 \text{ litre}

Answer key and solution verified before publishing.

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Exam: JEE Advanced 2020
Paper: Paper 1
Subject: Chemistry
Chapter: Nitrogen Containing Organic Compounds
Topic: Aniline