Q31.A 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 : (Atomic mass : Cl = 35. 5 amu, H = 1 amu ) (1) 10. 2 M (2) 14. 0 M (3) 12. 5 M (4) 18. 2 M
What This Question Tests
This question tests the ability to calculate molarity from given mass percentage and density of a solution, involving unit conversions and molar mass calculations.
Concepts Tested
Formulas Used
Molarity = (Mass % ร Density ร 10) / Molar Mass
๐ NCERT Sections This Tests
1.4 โ Concentrated Nitric Acid Used In Laboratory Work Is 68% Nitric Acid By Mass In
Chemistry Class 11 ยท Chapter 1
1.4 Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504 g mLโ1? 27 Solutions Reprint 2025-26
1.3 โ Define The Following Terms:
Chemistry Class 11 ยท Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
1.28 โ Calculate The Mass Percentage Of Aspirin (C9H8O4) In Acetonitrile (Ch3Cn) When
Chemistry Class 11 ยท Chapter 1
1.28 Calculate the mass percentage of aspirin (C9H8O4) in acetonitrile (CH3CN) when 6.5 g of C9H8O4 is dissolved in 450 g of CH3CN.
๐ Question Details
- Chapter
- Solutions
- Topic
- Molarity calculation
- Year
- 2022
- Shift
- 26 Jun Shift 1
- Q Number
- Q31
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 2: Solutions
More from this Chapter
Q81.The orbital angular momentum for an electron revolving in an orbit is given by โl(l + 1) โ 2ฯh . This momentum for an s-electron will be given by (1) zero (2) h 2ฯ (3) โ2 โ 2ฯh (4) + 21 โ 2ฯh JEE Main 2003 JEE Main Previous Year Paper
Q90.Which one of the following aqueous solutions will exhibit highest boiling point? (1) 0.01MNa2SO4 (2) 0.015M glucose (3) 0.015M urea (4) 0.01MKNO3
Q79.Two solutions of a substance (non electrolyte) are mixed in the following manner. 480 ml of 1.5 M first solution + 520 mL of 1.2 M second solution. What is the molarity of the final mixture? (1) 1.20 M (2) 1.50 M (3) 1.344 M (4) 2.70 M
Q92.Benzene and toluene form nearly ideal solutions. At 20โC, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20โC for a solution containing 78 g of benzene and 46 g of toluene in torr is (1) 50 (2) 25 (3) 37.5 (4) 53.5