Properties of Gases and Gas Laws

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Questions and Answers

What is the number of measurable properties that can be used to describe a gas sample?

  • 3
  • 4 (correct)
  • 2
  • 5

What is the main difference between ideal gases and non-ideal gases?

  • Ideal gases obey general gas laws, while non-ideal gases do not (correct)
  • Ideal gases are found naturally, while non-ideal gases are synthetic
  • Ideal gases are heavier, while non-ideal gases are lighter
  • Ideal gases have a fixed volume, while non-ideal gases have a variable volume

What is the relationship between the volume and pressure of a gas at constant temperature, according to Boyle's Law?

  • The volume is inversely proportional to the pressure (correct)
  • The volume is directly proportional to the pressure
  • The volume is proportional to the cube of the pressure
  • The volume is proportional to the square of the pressure

What is the relationship between the volume and temperature of a gas at constant pressure, according to Charles' Law?

<p>The volume is directly proportional to the temperature (A)</p> Signup and view all the answers

What is the relationship between the pressure and temperature of a gas at constant volume, according to the Law of Pressure?

<p>The pressure is directly proportional to the temperature (B)</p> Signup and view all the answers

What is the principle stated by Avogadro's Principle?

<p>Equal volumes of gases contain equal numbers of molecules (A)</p> Signup and view all the answers

Which of the following is a characteristic of ideal gases?

<p>They obey general gas laws (A)</p> Signup and view all the answers

If the volume of a gas is decreased at constant temperature, what is the effect on its pressure?

<p>It increases (D)</p> Signup and view all the answers

What is the effect of increasing the temperature of a gas at constant pressure?

<p>The volume of the gas increases (A)</p> Signup and view all the answers

What is the relationship between the pressure and temperature of a gas at constant volume?

<p>They are directly proportional (A)</p> Signup and view all the answers

What is the significance of Avogadro's Principle?

<p>It states that equal volumes of gases contain equal numbers of molecules (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of non-ideal gases?

<p>They do not obey general gas laws (A)</p> Signup and view all the answers

Flashcards

Boyle's Law

At constant temperature, gas volume is inversely proportional to its pressure.

Charles' Law

At constant pressure, gas volume is directly proportional to its temperature.

Pressure Law

At constant volume, gas pressure is directly proportional to its temperature.

Ideal Gas

A gas that perfectly obeys gas laws.

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Real Gas

A gas that doesn't perfectly follow gas laws.

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Avogadro's Principle

Equal volumes of gases (at the same temperature & pressure) contain equal numbers of molecules.

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Gas Volume

The amount of space a gas occupies.

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Gas Pressure

Force exerted by a gas per unit area.

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Gas Temperature

Measure of the kinetic energy of gas molecules.

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Gas Moles

The amount of gas in terms of molecules.

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Gas Parameters

Volume, Pressure, Temperature and Number of Moles that describe gas.

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Gas Classification

Gases are either Ideal or Real (Non-ideal).

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Gas Law

Mathematical relationships between volume, pressure and temperature.

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Study Notes

Gas Parameters

  • A gas sample is described by four measurable properties: volume (V), pressure (P), temperature (T), and number of moles (n) of gas.

Gas Classification

  • Gases are classified into two types: ideal gases and non-ideal (real) gases.
  • Ideal gases obey general gas laws.
  • Non-ideal gases do not obey general gas laws.

Gas Laws

Boyle's Law

  • States that the volume of a gas at constant temperature is inversely proportional to its pressure.
  • Mathematically represented as V ∝ 1/P.

Charles' Law

  • States that at constant pressure, the volume of a gas is directly proportional to its absolute temperature.
  • Mathematically represented as V ∝ T (at constant P).

Law of Pressure

  • States that at constant volume, the pressure of a gas is directly proportional to its absolute temperature.
  • Mathematically represented as P ∝ T (at constant V).

Avogadro's Principle

  • States that at constant temperature and pressure, equal volumes of gases contain equal numbers of molecules.

Gas Parameters

  • A gas sample is described by four measurable properties: volume (V), pressure (P), temperature (T), and number of moles (n) of gas.

Gas Classification

  • Gases are classified into two types: ideal gases and non-ideal (real) gases.
  • Ideal gases obey general gas laws.
  • Non-ideal gases do not obey general gas laws.

Gas Laws

Boyle's Law

  • States that the volume of a gas at constant temperature is inversely proportional to its pressure.
  • Mathematically represented as V ∝ 1/P.

Charles' Law

  • States that at constant pressure, the volume of a gas is directly proportional to its absolute temperature.
  • Mathematically represented as V ∝ T (at constant P).

Law of Pressure

  • States that at constant volume, the pressure of a gas is directly proportional to its absolute temperature.
  • Mathematically represented as P ∝ T (at constant V).

Avogadro's Principle

  • States that at constant temperature and pressure, equal volumes of gases contain equal numbers of molecules.

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