solutions

Question 1

what is a solution

Answer 1

Solution is a homogeneous mixture of two or more substances on molecular level. The
substances forming the solution are called components (solute, solvent) of the solutions

Question 2

molality(m)

Answer 2

no. of moles of solute/weight of solution (in kg)

Question 3

molarity(M)

Answer 3

no. of moles of solute/volume of solution(in L)

Question 4

relation b/w molality and molarity

Answer 4

molarity=m*d/1+mM2/1000

where, M2 = molar mass of solute, d = density of the solution, m = molality of solution

Question 5

● Relation between molarity and density

Answer 5

Molarity = × 10 density × % by wt. of solute/mol. wt. of solute

Question 6

mole fraction

Answer 6

mole fraction of solute= n(solute)/n(solute)+n(solvent)
n=no of moles
same for solvent , x(solute)+x(solvent)=1

Question 7

Relation between molarity (m ) M and mole fraction ( x)

Answer 7

x=MM1/M(M1-M2)+D

Question 8

Solubility

Answer 8

The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature is termed as solubility

Question 9

What is vapour pressure

Answer 9

The pressure exerted by the vapour molecules above liquid surface which are in equilibrium with it at a given
temperature is called vapour pressure.

Question 10

Factor Affecting Vapour Pressure

Answer 10

Effect of Adding Solute
Nature of the Liquid
Temperature
Factor Affecting Vapour Pressure

Question 11

what is partial vapour pressure

Answer 11

The vapour pressure of liquid in solution is known
as its partial vapour pressure and is less than the
vapour pressure of the pure liquid at the same temperature.

Question 12

what is rault’s law

Answer 12

The partial vapour pressure of each component of the solution is directly proportional to the mole fraction of that component present in solution.