JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 30 January 2024, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

The mass of sodium acetate (

\mathrm{CH_3COONa}

) required to prepare 250 mL of 0.35 M aqueous solution is ________ g. (Molar mass of

\mathrm{CH_3COONa}

is 82.02 g mol

^{-1}

)

Official answer

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Molarity Calculation

Same idea in other shifts

Asked 16× in all

4 Apr 2024, Shift 1 · Q61The Molarity (M) of an aqueous solution containing 5.85 g of NaCl in 500 mL water is : (Given : Molar Mass Na : 23 and Cl : 35.5…EasySingle correct
29 Jan 2024, Shift 1 · Q81A solution of $\mathrm{H_2SO_4}$ is 31.4% $\mathrm{H_2SO_4}$ by mass and has a density of 1.25g/mL. The molarity of the $\mathrm{H_2SO_4}$ …EasyNumerical value
10 Apr 2023, Shift 2 · Q80Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : 3.1500g of hydrated…EasyAssertion–reason
26 Jul 2022, Shift 1 · Q85When 800 mL of 0.5 M nitric acid is heated in a beaker, its volume is reduced to half and 11.5 g of nitric acid is evaporated. The…MediumNumerical value
26 Jun 2022, Shift 1 · Q61A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is :…EasySingle correct
4 Aug 2021, Shift 1 · Q51A solution of $\mathrm{H_2SO_4}$ has 30% $\mathrm{H_2SO_4}$ by mass and a density of 1.25 g mL $^{-1}$ . The molarity of the solution is…EasyNumerical value
26 Aug 2021, Shift 2 · Q51100 mL of $\mathrm{Na_3PO_4}$ solution contains 3.45 g of sodium. The molarity of the solution is __________ $\times 10^{-2}$ mol…MediumNumerical value
31 Aug 2021, Shift 1 · Q51The molarity of the solution prepared by dissolving 6.3 g of oxalic acid ( $\mathrm{H_2C_2O_4\cdot 2H_2O}$ ) in 250 mL of water in mol…EasyNumerical value

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 108 of the 174 JEE Main shifts held from 2017 to 2026.