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</p> Signup and view all the answers

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

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

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

    <p>Kelvin</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</p> Signup and view all the answers

    What is the conversion from Celsius to Kelvin?

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

    What is the unit of the universal gas constant R?

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

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

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

    What is the conversion from mm Hg to Pa?

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

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

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

    What is the ideal gas equation?

    <p>pV = nRT</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.</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.</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.</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.</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</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</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</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</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</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</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</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</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.</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</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.</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</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.</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.</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.</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.</p> Signup and view all the answers

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