# what is graham’s law of effusion

## Best answer

Graham’s law states that the rate of diffusion or effusion of a gas is inversely proportional to the square root of its molar mass. See this law in equation form below.

## People also ask

### What is Graham’s Law of diffusion and effusion?

Graham’s law of diffusion and effusion states the rate of diffusion or effusion for a gas is inversely proportional to the square root of the molar mass of the gas. r 鈭?1/(M). or. r(M) = constant. where. r = rate of diffusion or effusion. M = molar mass.

### What did Thomas Graham discover about the rate of effusion?

Thomas graham discovered this law in 1848, and it is also known as the graham’s law of Effusion. His experimentation with the rate of effusion process unveiled that gas with heavier molecules travels slower than gas with lighter particles.

### What is Graham’s Law in chemistry?

Graham’s law states that the rate of diffusion or effusion of a gas is inversely proportional to the square root of the molar mass of the gas: r 鈭?1/(M). or. r(M) = constant. where r = rate of diffusion or effusion and M = molar mass.

### How did Thomas Graham contribute to the atomic theory?

In 1829, Scottish physical chemist Thomas Graham experimentally determined the rate of effusion of a gas is inversely proportional to the square root of the gas particle mass and to its density. In 1848, he showed the rate of effusion is also inversely proportional to the square root of the molar mass of the gas.