EASY
11th CBSE
IMPORTANT
Earn 100

Calculate the mole fraction of ethanol and water in a sample of rectified spirit which contains 95 per cent of ethanol by weight.

Important Questions on Some Basic Concepts of Chemistry

EASY
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5
The density of a 3 M Na2S2O3 (sodium thiosulphate) solution is 1.25 g cm-3. Calculate the percentage by weight of sodium thiosulphate.
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5
The density of a 3 M Na2S2O3 (sodium thiosulphate) solution is 1.25 g cm-3. Calculate the mole fraction of sodium thiosulphate.
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 5
The density of a  3 M Na2S2O3 (sodium thiosulphate) solution is 1.25 g cm-3. Calculate the molality of Na+and S2O32- ions.
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 6
An aqueous solution of sodium chloride is marked 10 % (ww) on the bottle. The density of the solution is 1.071 g mL-1. What is the molality and molarity? Also, what is the mole fraction of each component in the solution?
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 7
H2SO4used in lead storage cell is 38 % by mass and has a density of 1.30 g cm-3. Calculate its molarity.
EASY
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 1
Find the percentage composition of potassium chlorate (KClO3).
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 2
Calculate the percentage of SO42- in pure crystals of Mohr's salt, viz.,  FeSO4.(NH4)2SO4.6H2O.
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 1 - Some Basic Concepts of Chemistry>PROBLEMS FOR PRACTICE>Q 2
Calculate the percentage of H2O in pure crystals of Mohr's salt, viz.,  FeSO4.(NH4)2SO4.6H2O.