Class 11

Chemistry

Gases & Solutions

States of Matter

The graph between volume - temperature cuts the negative X-axis at a point that corresponds to ________.

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A gas bulb of $1L$ capacity contains $2.0×10_{11}$ molecules of nitrogen exerting a pressure of $7.57×10_{3}Nm_{−2}$. Calculate the root mean square (rms) speed and the temperature of the gas molecules. If the ratio of the most probable speed to the root mean square is $0.82$, calculate the most probable speed for these molecules at this temperature.

Which of the following graphs is not a straight line for an ideal gas?

If a gas expended at constant temperature

The surface tension of which of the following liquid is maximum?

A closed vessel with rigid walls contains 1 mole of $._{92}U$ and 1 mole of air at $298K$. Considering complete decay of $._{92}U$ to $._{82}Pb$the ratio of the final pressure to the initial pressure of the system at $298K$ is

The rate of diffusion of a gas is………….proportional to both ……….. And square root of molecular mass.

The composition of the equilibrium mixture (`Cl_(2)` `2Cl`) , which is attained at `1200^(@)C`, is determined by measuring the rate of effusion through a pin hole. It is observed that a `1.80 mm Hg` pressure, the mixture effuses `1.16 times` as fact as krypton effuses under the same conditions. Calculate the fraction of chlorine molecules dissociated into atoms (atomic weight of `Kr` is `84`).

Why at extremely low pressures, the real gases obey the ideal gas equation?