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Byju's Answer
Standard XII
Chemistry
Boiling Point of Carboxylic Acids
A 1 : 2 mixtu...
Question
A 1 : 2 mixture (by mole) of ethanol and propanol exerts a vapour pressure of 250 mm Hg. The vapour pressure of propanol in solution is 200 mm Hg, then the vapour pressure of pure ethanol is (in mm Hg)
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Q.
A mixture of ethanol and propanol has vapor pressure 279 mm of Hg at 300 K. The mol fraction of ethanol in the solution is 0.6 and vapour pressure of pure propanol is 210 mm of Hg. Vapour pressure of pure ethanol will be:
Q.
A solution of 1-propanol and 2-propanol having
3
4
by mass of 2-propanol has an equilibrium vapour pressure of 88.8 mm Hg. Another solution having
1
3
by mass of 2.propanol has an equilibrium vapour pressure of 68.3 mm Hg. Calculate vapour pressure of pure alcohols at
40
o
C
assuming ideal solution mixture prepared at
40
o
C
.
Q.
At
55
0
C
, ethanol has a vapour pressure of
168
mm Hg, and the vapour pressure of methylcyclohexane is
280
mm Hg. A solution of the two in which the mole fraction of ethanol is
0.68
, has a total vapour pressure of
225
mm Hg. This solution is formed from its components with:
Q.
Cyclohexane and ethanol at a particular temperature have vapour pressures of
280
m
m
H
g
and
168
m
m
H
g
respectively. If the mole fraction of cyclohexane in the solution mixture is 0.32, the mixture is found to have a total vapour pressure of
250
m
m
H
g
.
Choose the correct statement(s).
Q.
At a particular temperature, the vapour pressures of 'A' and 'B' are
250
m
m
H
g
and
180
m
m
H
g
respectively. If the mole fraction of 'B' in the solution mixture is 0.42, the total vapour pressure of the solution mixture is
200
m
m
H
g
.
Choose the correct statement.
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