Mastering Graham's Law

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What is the explanation for the movement of gas particles according to the kinetic molecular theory?

Gas particles are constantly moving in random, rapid motion.

What is diffusion?

Diffusion is the movement of one substance through another.

What are the two processes explained by Graham's Law?

The two processes explained by Graham's Law are diffusion and effusion.

How can Graham's Law be used to solve problems?

Graham's Law can be used to solve problems by comparing the rates of diffusion or effusion of different gases. Signup and view all the answers

What causes the smell of chocolate chip cookies to spread out from a bakery?

The smell of chocolate chip cookies spreads out from a bakery because the cookie smell molecules are constantly moving randomly and rapidly. Signup and view all the answers

What is the chemistry word for the movement of one substance through another?

The chemistry word for the movement of one substance through another is diffusion. Signup and view all the answers

What is diffusion?

Diffusion is the process by which gas particles move from an area of high concentration to an area of low concentration. Signup and view all the answers

What is effusion?

Effusion is the process by which gas particles escape through small holes in a container. Signup and view all the answers

How does diffusion cause the smell of cookies to spread?

Diffusion causes the smell of cookies to spread by allowing the cookie smell particles to move from an area of high concentration (the cookies) to an area of low concentration (the surrounding air). Signup and view all the answers

Why did the balloon Johnny was holding become smaller?

The balloon Johnny was holding became smaller because the helium gas particles inside the balloon effused through small holes in the balloon's walls. Signup and view all the answers

What does Graham's Law of effusion state?

Graham's Law of effusion states that the rates of effusion of two gases are inversely proportional to the square roots of their molar masses. Signup and view all the answers

In the context of effusion, what does 'inversely proportional' mean?

'Inversely proportional' means that as one value increases, the other value decreases, and vice versa. Signup and view all the answers

How can Graham's Law of effusion be used to compare the rates of effusion of two gases?

Graham's Law of effusion can be used to compare the rates of effusion of two gases by comparing the square roots of their molar masses. The gas with the smaller molar mass will have a higher rate of effusion. Signup and view all the answers

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Study.com helped the person pass their exam by providing practice quizzes with test questions that were very similar to the exam questions. Signup and view all the answers

What is the relationship between effusion and diffusion?

Effusion and diffusion are both processes involving the movement of gas particles. Diffusion refers to the movement of particles from an area of high concentration to low concentration, while effusion specifically refers to the escape of gas particles through small holes in a container. Signup and view all the answers

What caused Johnny's balloon to lose some of its helium?

The phenomenon called effusion caused Johnny's balloon to lose some of its helium. The small helium atoms were able to escape through microscopic holes in the balloon, making it smaller and more dense, which caused it to sink. Signup and view all the answers

What is Graham's Law?

Graham's Law states that the effusion rate of a gas is inversely proportional to the square root of its molecular mass. Lighter gas molecules will travel faster than heavier gas molecules, assuming temperature and pressure remain constant. Signup and view all the answers

How is Graham's Law used to compare the rates of two different gases?

Graham's Law is used by comparing the ratio of the rates (or speeds) of gas A over gas B. The ratio is equal to the square root of the mass of gas B over the mass of gas A. Signup and view all the answers

What is the effusion rate of hydrogen molecules if oxygen molecules effuse at a rate of 3 mol/s?

Using Graham's Law, we can calculate that the effusion rate of hydrogen molecules would be 12 mol/s. The ratio of the rate of hydrogen over oxygen is equal to the square root of the mass of oxygen over the mass of hydrogen. Signup and view all the answers

How does Graham's Law help determine the rate of effusion in different situations?

Graham's Law provides a formula for calculating the rate of effusion in many situations. It is also a useful approximation for comparing the rates of diffusion of two gases. Signup and view all the answers