MEDIUM
12th ICSE
IMPORTANT
Earn 100

What is meant by abnormal molecular mass? Illustrate it with an example.

Important Questions on Solutions

MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 50
Explain why molecular mass of ethanoic acid when determined by colligative properties of its solutions is abnormal. Suggest the value of van't Hoff factor in this case.
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 51
What do you understand by association and dissociation of solute molecules in solution? How do they affect a colligative property?
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 52
What is van't Hoff factor? What possible values can it have if the solute molecules undergo association?
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 52
What is van't Hoff factor? What possible values can it have if the solute molecules undergo dissociation in solution?
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 53
Why do we sometimes get abnormal molecular masses of substances? Give the modified equations for the colligative properties for substances exhibiting abnormal molecular masses.
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 54
Define the term van't Hoff factor? How is van't Hoff factor related to degree of dissociation?
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 55
Define degree of dissociation. A substance dissociates in solution to give n ions. Derive an expression for degree of dissociation in terms of van't Hoff factor i and n.
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>SHORT ANSWER TYPE QUESTIONS>Q 56
The mole fraction of a solute in a solution is 0.1 At 298 K, molarity of this solution is the same as its molality.  Density of this solution at 298 K is 2.0 g cm-3 . The ratio of the molecular weights of the solute and solvent MWsolute MWsolvent  is?