Question
Question: Two liquids \(\mathrm { HNO } _ { 3 }\) (1) and water (2) form a maximum boiling azeotrope when mix...
Two liquids HNO3 (1) and water (2) form a maximum boiling azeotrope when mixed in the ratio of 68% and 32 % respectively. It means
A
A-B interactions are stronger than A- A and B –B interactions
B
A-B interactions are weaker than A – A and B-B interactions
C
Vapour pressure of solution is more than the pure component
D
Vapour pressure of solution is less since only one component vaporizes.
Answer
A-B interactions are stronger than A- A and B –B interactions
Explanation
Solution
Since the new interaction (A-B) are stronger than (A- a) and (B- B) interactions, the solution shows negative
deviation, i.e. less vapour pressure and hence higher boiling point.