# Does temperature affect rate of effusion?

D

## Does temperature affect rate of effusion?

Diffusion is faster at higher temperatures because the gas molecules have greater kinetic energy. Graham’s Law states that the effusion rate of a gas is inversely proportional to the square root of the mass of its particles.

## Will have the greatest rate of effusion at a given temperature?

As CH4 C H 4 has the lowest molar mass, therefore, CH4 C H 4 will have the greatest rate of effusion at a given temperature.

Which of the following gases will have the highest rate of effusion at a given temperature?

helium
The lighter a gas is, the faster it will effuse; the heavier a gas is, the slower it will effuse. Of all the choices, helium (He) has the lowest molecular weight (atomic weight in this case), so it will have the highest rate of effusion.

What gas has the greatest rate of effusion at a given temperature?

The lighter a gas is, the faster it will effuse; the heavier a gas is, the slower it will effuse. Of all the choices, helium (He) has the lowest molecular weight (atomic weight in this case), so it will have the highest rate of effusion.

### Which of the following gases will have the lowest rate of effusion?

Answer and Explanation: The gas with the largest molar mass will have the smallest/lowest effusion rate. Choice a. a. CI2 will have the smallest effusion rate.

### Which gas has the lowest rate of effusion?

The rate of effusion for a gas is inversely proportional to the square-root of its molecular mass (Graham’s Law). The gas with the lowest molecular weight will effuse the fastest. The lightest, and therefore fastest, gas is helium.

Which gas diffuses faster ethene or methane?

A ethene Ethene molecules are heavier and so move faster. C methane Methane molecules are lighter and so move faster.

Which of the following gas will have highest rate of diffusion?

As per Graham’s law, the rate of effusion or diffusion is inversely proportional to the square root of its molecular weight. Consequently, the gas with the least molecular weight effuses the fastest hence, helium gas has a higher rate of diffusion compared to nitrogen or oxygen.

#### Why is the speed of a given molecule in a gas double at constant temperature?

If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure (Figure 1).  By Admin