Consider the following statements: I. At constant pressure the density of an ideal gas is inversely proportional to its absolute temperature. II. For a gas collected over water, the pressure of the dr

Question

Consider the following statements:

I. At constant pressure the density of an ideal gas is inversely proportional to its absolute temperature.

II. For a gas collected over water, the pressure of the dry gas = total pressure - vapour pressure of water.

III. On a $P$ vs $T$ (in kelvin) plot at constant volume, a gas with a larger $n$ / $V$ gives a steeper line.

IV. The rate of effusion of $H_{2}$ is 16 times that of $O_{2}$ at the same $T$ and $P$ .

Which statements are correct?

TestHub · Accepted Answer

I d = PM / RT , so d is proportional to 1/ T at constant P : true. II Dalton's law: true. III P = ( n R / V ) T , so the slope n R / V is larger for larger n / V : true. IV Rate ratio = 32/2 ​ = 4, not 16: false. Correct: I, II and III only. Answer: (D).

Chemistry - Ideal Gas Question with Solution | TestHub

Options:

Doubts & Discussion