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18 Gas Laws: SAQ2

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Questions and Answers

What is Diffusion?

is the spontaneous spreading out of a substance due to the natural movement of the particles of that substance.

Under what conditions do the volumes of gases consumed and produced in a reaction bear a simple whole number ratio to each other?

When the volumes are measured under the same conditions of temperature and pressure.

What is the relationship between the volume of a fixed mass of gas and its pressure, according to Boyle's Law?

The volume of a fixed mass of gas is inversely proportional to the pressure of the gas.

What is the underlying assumption about the kinetic energy of particles in the Kinetic Theory of Gases?

The average kinetic energy of the particles is proportional to the Kelvin temperature. Signup and view all the answers

What is the combined gas law, and what conditions must be met when using it?

The combined gas law is p₁ V₁ / T₁ = p₂ V₂ / T₂. All temperatures must be in Kelvin, and units on either side of the equation must be consistent. Signup and view all the answers

According to Avogadro's Law, what is the relationship between equal volumes of gases and the number of molecules they contain?

Equal volumes of gases, under the same conditions of temperature and pressure, contain equal numbers of molecules. Signup and view all the answers

What is the underlying assumption about the volumes of particles in the Kinetic Theory of Gases, and how does this assumption relate to the distances between them?

The assumption is that the volumes of particles are negligible compared to the distances between them, implying that the particles are point-like objects with no significant volume. Signup and view all the answers

How does the average kinetic energy of particles in the Kinetic Theory of Gases change with temperature, and what is the proportionality constant?

The average kinetic energy of particles is directly proportional to the Kelvin temperature, with the proportionality constant being 1. Signup and view all the answers

What is the relationship between the pressure and volume of a gas at constant temperature, and what is the mathematical expression of this relationship?

The pressure and volume of a gas are inversely proportional at constant temperature, and the mathematical expression is p₁V₁ = p₂V₂. Signup and view all the answers

What is the relationship between the volume of a gas and its temperature at constant pressure, and what is the mathematical expression of this relationship?

The volume of a gas is directly proportional to the Kelvin temperature at constant pressure, and the mathematical expression is V₁/T₁ = V₂/T₂. Signup and view all the answers