Chemistry 2: Chemical Equilibrium Kc and Kp Expressions Quiz
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Questions and Answers

What causes the fizzing sound when a can of soda is opened?

  • The addition of more carbon dioxide into the soda
  • The decrease in pressure above the soda
  • The release of pressurized carbon dioxide gas (correct)
  • The increase in temperature of the soda

    • Why does squeezing a can of soda cause the pressure of the CO2 gas in the solution to increase?

  • Squeezing increases the concentration of CO2 gas in the soda
  • Squeezing decreases the kinetic energy of CO2 gas molecules
  • Squeezing reduces the amount of space occupied by CO2 gas molecules (correct)
  • Squeezing increases the temperature of the soda

    • What is in dynamic equilibrium when a can of soda is opened?

  • The rate of CO2 production and its consumption in the soda
  • The volume of gas in the can and its rate of escape
  • The temperature of the soda and its pressure
  • CO2 gas above the liquid and CO2 gas dissolved in the liquid (correct)

    • What prevents carbon dioxide dissolved in the liquid from escaping when a can of soda is opened?

    <p>The pressure from the CO2 gas above the liquid</p> Signup and view all the answers

    What causes the appearance of bubbles rising and popping when a can of soda is opened?

    <p>Escape of carbon dioxide gas from the liquid</p> Signup and view all the answers

    On a hot sunny day, why does a can of soda feel refreshing to drink?

    <p>The CO2 gas creates a refreshing sensation on the tongue</p> Signup and view all the answers

    Which mathematical expression represents the relationship between pressure, volume, number of moles, and temperature of a gas?

    <p>P = nRT/V</p> Signup and view all the answers

    When a gas is compressed, what happens to its pressure?

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

    What does Kp represent in the context of chemical equilibrium?

    <p>Equilibrium constant using partial pressures</p> Signup and view all the answers

    What is the general form of the expression for Kp in terms of partial pressures?

    <p>(P_reactant1 * P_reactant2) / (P_product1 * P_product2)</p> Signup and view all the answers

    What does Kc represent in the context of chemical equilibrium?

    <p>Equilibrium constant using concentrations</p> Signup and view all the answers

    Which term should be raised to the power equal to the coefficient of the substance in the chemical equation when writing the Kp expression?

    <p>Partial pressure</p> Signup and view all the answers

    What happens to the numerical value of Kc compared to Kp for a given reaction?

    <p>It is generally different</p> Signup and view all the answers

    What does the gas constant 'R' represent in the ideal gas equation?

    <p>'R' is a constant</p> Signup and view all the answers

    What does n/V represent in the rearranged ideal gas equation 'P = nRT/V'?

    <p>Molar concentration (M)</p> Signup and view all the answers

    Which law states that at constant temperature, the pressure of a given amount of gas is inversely proportional to its volume?

    <p>Boyle's law</p> Signup and view all the answers

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