MHT CET · Chemistry · Solutions

Which of the following statements is correct for boiling point of a liquid?

A Temperature at which a liquid boil at any pressure
B Temperature at which solid is in equilibrium with its liquid
C Temperature at which vapour pressure equals the applied pressure
D Temperature at which applied pressure is greater than vapour pressure of liquid

Verified Solution

Answer & Solution

Correct Answer

(C) Temperature at which vapour pressure equals the applied pressure

Step-by-step Solution

Detailed explanation

The boiling point of a liquid is that temperature at which its vapour pressure becomes equal to the applied pressure or external pressure.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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