Derive the relationship ΔTb = Kb
m
Answers
Answer:
The elevation in the boiling point is given by the expression ΔT
b
=K
b
⋅m.....(1)
The molality is given by the expression m=
M
2
⋅W
1
W
2
......(2)
Substitute equation (2) in equation (1)
ΔT
b
=K
b
⋅
M
2
⋅W
1
W
2
Hence, the expression for the molar mass of the solute is
M
2
=
ΔT
b
⋅W
1
K
b
⋅W
2
The elevation in the boiling point is given by the expression ΔT
b
=K
b
⋅m.....(1)
The molality is given by the expression m=
M
2
⋅W
1
W
2
......(2)
Substitute equation (2) in equation (1)
ΔT
b
=K
b
⋅
M
2
⋅W
1
W
2
Hence, the expression for the molar mass of the solute is
M
2
=
ΔT
b
⋅W
1
K
b
⋅W
2
Explanation: