A sample of oxygen is collected over water at a total pressure of 502.1 mmHg at

Question

A sample of oxygen is collected over water at a total pressure of 502.1 mmHg at 10 degree C. The vapor pressure of water at 10 degree C is 9.2 mmHg. The partial pressure of the 02 is Which statement is inconsistent with the kinetic theory of an ideal gas? a. The forces of repulsion between gas molecules are very weak or negligible. b. Most of the volume occupied by a gas is empty space. c. The collisions between gas molecules are inelastic. d. The average kinetic energy of a gas is proportional to the absolute temperature. e. Gas molecules move in a straight line between collisions.

Explanation / Answer

Answer:-

2). Total pressure of the solution = 502.1 mmHg

Partial pressure of water = 9.2 mmHg

According to the Dalton's law of partial pressure,

Ptotal = sum of the partial pressures of the constituents

502.1 = partial pressure of oxygen + partial pressure of water

partial pressure of oxygen = 502.1 - 9.2

= 492.9 mmHg

3). c. The collisions between gas molecules are inelastic.

This statement is inconsistent with the kinetic theory of an ideal gas because this theory assumes the collisions between gas molecules perfectly elastic.

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