A graph of vapour pressure and temperature for three different liquids X, Y and Z is shown below:

The following inferences are made:

(A) X has higher intermolecular interactions compared to Y.

(B)

Question

A graph of vapour pressure and temperature for three different liquids X, Y and Z is shown below:

The following inferences are made:

(A) X has higher intermolecular interactions compared to Y.

(B) X has lower intermolecular interactions compared to Y.

(C) Z has lower intermolecular interactions compared to Y.

The correct inferences is/are:

Canvas Classes · Accepted Answer

Strategy:
 Vapour pressure is an indicator of intermolecular forces. Liquids with stronger attractions hold their molecules more tightly and thus have a lower vapour pressure at a given temperature.

Step 1: Observe the graph
Look at the vapour pressures of X, Y, and Z at a constant temperature.
- The curve for X is the lowest (lowest ).
- The curve for Z is the highest (highest ).
- Order of vapour pressure: .

Step 2: Relate Vapour Pressure to Intermolecular Interactions
Strength of interactio

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