Krypton gas is four times denser than neon gas at the same temperature and pressure.
Which gas is predicted to effuse faster?
Think of the effusion of gases this way. Suppose you have two dogs, a large and heavy one whose pal is a small and light one. Both want to go through a small hole in the fence. Which do you think can get through the small fence hole easier? The small light one of course. Same with atoms and molecules. The smaller lighter gases effuse faster.
thanks how do i know how much faster?
To determine which gas is predicted to effuse faster, we need to understand Graham's Law of Effusion. According to Graham's Law, the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
In this case, we are comparing Krypton gas and Neon gas. Since Krypton gas is four times denser than Neon gas, it means that Krypton gas has a higher molar mass than Neon gas. Therefore, we can conclude that Neon gas is lighter than Krypton gas.
Now, let's consider Graham's Law of Effusion. Since the rate of effusion is inversely proportional to the square root of the molar mass, it means that lighter gases effuse faster than heavier gases.
Based on this information, we can predict that Neon gas will effuse faster than Krypton gas, as Neon gas is lighter.