EASY
12th West Bengal Board
IMPORTANT
Earn 100

Why NaCl solution freezes at lower temperature than water but boils at higher temperature?

Important Questions on Solutions

MEDIUM
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 16
Why does molality of a solution remains unchanged with change in temperature while its molarity changes?
MEDIUM
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 17
Why is the cooking temperature in pressure cooker higher than that in the open pan?
MEDIUM
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 18
Solution A is obtained by dissolving 1 g of urea in 100 g of water and solution B is obtained by dissolving 1 g of glucose in 100 g of water. Which solution will have a higher boiling point and why?
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 19
On mixing equal volumes of water and ethanol, what type of deviation would you expect from Raoult's law?
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 20
When is the value of van't Hoff factor more than one?
HARD
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 21
Give one example each when Van't Hoff's factor is 2 and 12?
EASY
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 22

How is that the boiling point of the following solutions in water are different:

i) 0.1 M NaCl solution      ii) 0.1 M sugar solution?

HARD
12th West Bengal Board
IMPORTANT
NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 2 - Solutions>REVIEW EXERCISES>Q 23
Mention a large scale use of the phenomena of reverse osmosis.