AP EAMCET202120 Aug 2021Evening ShiftChemistrySolutionsActual
If two liquids A and B form a minimum boiling azeotrope at some specific composition, then which statement among the following is correct?
Options
- AA-B molecular interactions are stronger than A-A and B-B interactions.
- BThe total vapour pressure of the mixture is greater than that corresponding to an ideal solution.
- CThere is a slight decrease in volume when the two components are mixed.
- DΔH mix will have a negative value.
Correct answer
B. The total vapour pressure of the mixture is greater than that corresponding to an ideal solution.
Step-by-step solution
Minimum Boiling Azeotropes :- Non-ideal solutions showing large positive deviation from Raoult's law form minimum boiling azeotropes which boil at temperature lower than boiling point of its components ' A ' and ' B ' , e.g., water and benzene, chloroform and methanol. The Minimum Boiling Azeotropes has the A - B molecular interactions are weaker than A - A and B - B interactions. They has the total vapour pressure of the mixture is greater than that corresponding to an ideal solution. There is a slight increas