Gr 11 Physical Sciences: Ch 5.2 Ideal gas laws

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Questions and Answers

What is the SI unit for pressure?

  • Millimeters of mercury
  • Pascals (correct)
  • Kelvin
  • Atmospheres

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

  • Not related
  • Inversely proportional (correct)
  • Directly proportional
  • Equal

What is the universal gas constant R in J·K⁻¹·mol⁻¹ equivalent to?

  • Pressure per mole per Kelvin
  • Force per mole per Kelvin
  • Energy per mole per Kelvin (correct)
  • Energy per kilogram per Kelvin

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

<p>The volume increases (C)</p> Signup and view all the answers

What is the relationship between the initial and final states of an ideal gas?

<p>p₁V₁ = p₂V₂ (D)</p> Signup and view all the answers

What is the unit of temperature in the ideal gas laws?

<p>Kelvin (A)</p> Signup and view all the answers

If the volume of a gas is doubled at constant temperature, what happens to the pressure?

<p>It is halved (B)</p> Signup and view all the answers

What is the conversion from Celsius to Kelvin?

<p>K = °C + 273 (A)</p> Signup and view all the answers

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

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

What is the formula that relates the initial and final states of a gas, assuming the volume remains constant?

<p>p_1 / T_1 = p_2 / T_2 (A)</p> Signup and view all the answers

What is the purpose of the general gas equation?

<p>To combine Boyle's Law and the pressure-temperature relationship (C)</p> Signup and view all the answers

What is the unit of the universal gas constant R?

<p>J·K⁻¹·mol⁻¹ (A)</p> Signup and view all the answers

What is the condition for applying the ideal gas equation?

<p>All variables must be in SI units (C)</p> Signup and view all the answers

What is the relationship between the number of moles of gas and the volume of the gas, according to Avogadro's Law?

<p>Equal volumes of gases contain the same number of moles (B)</p> Signup and view all the answers

What is the purpose of understanding the gas laws and equations?

<p>To predict the behavior of gases under different conditions (A)</p> Signup and view all the answers

What is the formula that combines Boyle's Law and the pressure-temperature relationship?

<p>pV / T = k (D)</p> Signup and view all the answers

What is the unit of volume in the ideal gas laws?

<p>Cubic meters (m³) (B)</p> Signup and view all the answers

What is the effect of decreasing the volume of a gas at constant temperature?

<p>The pressure increases (A)</p> Signup and view all the answers

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

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

What is the conversion from mm Hg to Pa?

<p>1 mm Hg = 133.3 Pa (B)</p> Signup and view all the answers

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

<p>The pressure is inversely proportional to the volume (D)</p> Signup and view all the answers

What is the unit of moles in the ideal gas laws?

<p>Moles (mol) (C)</p> Signup and view all the answers

What is the effect of increasing the temperature of a gas at constant pressure, according to Charles' Law?

<p>The volume increases (B)</p> Signup and view all the answers

What is the relationship between the initial and final states of an enclosed gas, according to Boyle's Law?

<p>p1V1 = p2V2 (C)</p> Signup and view all the answers

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

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

What happens to the pressure of a gas when its temperature is increased, assuming the volume remains constant?

<p>The pressure increases. (B)</p> Signup and view all the answers

What is the purpose of the general gas equation?

<p>To relate the pressure, volume, and temperature of a gas simultaneously. (B)</p> Signup and view all the answers

What is the ideal gas equation?

<p>pV = nRT (A)</p> Signup and view all the answers

What is the implication of the general gas equation?

<p>The product of pressure and volume divided by temperature is constant. (C)</p> Signup and view all the answers

What is the significance of Avogadro's Law?

<p>It states that equal volumes of gases at the same temperature and pressure contain the same number of molecules. (A)</p> Signup and view all the answers

What is the condition for applying the ideal gas equation?

<p>The variables must be in SI units. (C)</p> Signup and view all the answers

What is the significance of understanding gas laws and equations?

<p>It is essential for predicting the behavior of gases under different conditions. (A)</p> Signup and view all the answers

If the volume of a gas is halved at constant temperature, what happens to the pressure?

<p>The pressure is doubled (B)</p> Signup and view all the answers

Which of the following is a direct result of the ideal gas equation?

<p>Equal volumes of gases at the same temperature and pressure contain the same number of moles (A)</p> Signup and view all the answers

What is the primary purpose of the general gas equation?

<p>To combine the pressure-temperature and volume-temperature relationships (D)</p> Signup and view all the answers

If the temperature of a gas is increased at constant pressure, what happens to its volume?

<p>The volume increases (C)</p> Signup and view all the answers

What is the primary assumption underlying the ideal gas equation?

<p>The number of moles of gas is constant (D)</p> Signup and view all the answers

Which of the following is a consequence of the pressure-temperature relationship?

<p>The pressure of a gas is directly proportional to its temperature (C)</p> Signup and view all the answers

What is the significance of the constant k in the general gas equation?

<p>It is a constant of proportionality (A)</p> Signup and view all the answers

What is the primary advantage of using the ideal gas equation?

<p>It allows for the calculation of changes in pressure, volume, temperature, and the amount of gas (D)</p> Signup and view all the answers

If the volume of an enclosed gas is tripled at a constant temperature, what happens to the pressure?

<p>The pressure decreases by a factor of 3. (C)</p> Signup and view all the answers

A gas is heated at a constant pressure, causing its volume to increase from 2 L to 4 L. What is the ratio of the final temperature to the initial temperature?

<p>2:1 (D)</p> Signup and view all the answers

If the pressure of an enclosed gas is quadrupled at a constant temperature, what happens to the volume?

<p>The volume decreases by a factor of 4. (B)</p> Signup and view all the answers

A gas is cooled at a constant pressure, causing its volume to decrease from 4 L to 2 L. What is the ratio of the final temperature to the initial temperature?

<p>1:2 (D)</p> Signup and view all the answers

What is the relationship between the initial and final states of an enclosed gas if the pressure is doubled and the volume is halved?

<p>The temperature remains constant. (B)</p> Signup and view all the answers

If the temperature of an enclosed gas is increased from 200 K to 400 K at a constant pressure, what happens to the volume?

<p>The volume increases by a factor of 2. (C)</p> Signup and view all the answers

What is the relationship between the initial and final states of an enclosed gas if the volume is doubled and the pressure is halved?

<p>The temperature remains constant. (A)</p> Signup and view all the answers

If the pressure of an enclosed gas is decreased by a factor of 2 at a constant temperature, what happens to the volume?

<p>The volume increases by a factor of 2. (A)</p> Signup and view all the answers

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