JEE CHEMISTRY MCQ: STATES OF MATTER

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Application +4 | -1

Let the most probable velocity of hydrogen molecules at a temperature of

\mathrm{t}^{\circ} \mathrm{C}

\mathrm{V}_0

. When the temperature is raised to

(2 \mathrm{t}+273)^{\circ} \mathrm{C}

the new rms velocity is (suppose all the molecules dissociate into atoms at latter temperature)

View answer and explanation

Correct option: B

\sqrt{6} \mathrm{~V}_0

The correct answer is B (

\sqrt{6} \mathrm{~V}_0

) because the new RMS velocity can be found by relating it to the initial most probable velocity, considering the dissociation of hydrogen molecules into atoms.

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A quantity of hydrogen gas occupies a volume of

30 \mathrm{~mL}

at a certain temperature and pressure. What volume would half this mass of hydrogen occupy at triple the absolute temperature and the pressure were one-ninth that of the original gas? In deriving the kinetic equation we make use of the root mean square speed of the molecules which is: Consider the following statements for kinetic molecular theory of gases
a. Particles of a gas move in all possible directions in straight lines.
b. At any particular time, different particles in the gas have different kinetic energies.
c. Collisions of gas molecules are perfectly inelastic in nature.
The correct statement(s) is/are The compressibility factor of an ideal gas is The relative strength of interionic/intermolecular forces in decreasing order is Compressibility factor of an ideal gas is