Learn

Friday, 9 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 16 March 2021, Shift 2, Chemistry Q54

Question 54 of 90 in this shift, Chemistry question 24 of 30, Section B.

At 25∘25^\circC, 50 g of iron reacts with HCl to form FeCl2\mathrm{FeCl_2}. The evolved hydrogen gas expands against a constant pressure of 1 bar. The work done by the gas during this expansion is ________ J. (Round off to the Nearest Integer). [Given : R=8.314 J mol−1K−1R=8.314\ \mathrm{J\,mol^{-1}K^{-1}}. Assume, hydrogen is an ideal gas] [Atomic mass of Fe is 55.85 u]

Official answer

2218

NTA final key.

Chapter
Thermodynamics (Chemistry)
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.