chem chp 2 solution

Question 1

what is a solution?

Answer 1

> homogenous mixture of 2 or more subs
true solution consists of a solvent and and a solute

Question 2

saturated solution

Answer 2

> is a solution that contains max amt of solute in given amt of solvent at given temp.
after reaching the point of eqm. dissolution stops and crystallization starts which leads to orecipitate occurence

Question 3

henrys law

Answer 3

the solubility of gas in liquid is directly proportional to the pressure of gas over the solution
s=khp

Question 4

unit of KH

Answer 4

mol L^-1 bar^-1

Question 5

raoults law

Answer 5

partial v.p of any volatile component of a solution = vp of pure component multiplied by its mole fraction in the solution

Question 6

positive deviation

Answer 6

solutions in which solute-solvent intermolecular attractions are weaker than those between solute-solute molecules and solvent-solvent molecules

Question 7

negative deviation

Answer 7

solutions in which solute-solvent intermolecular attractions are higher than those between solute-solute molecules and solvent-solvent molecules

Question 8

eg of non ideal solutions

Answer 8

ethanol+acetone
carbon disulphide+acetone
phenol+aniline
chlroform+acetone

Question 9

colligative props

Answer 9

physical prop of sol. that depends on the no.of the solute particles in sol and not on their nature