Gr 11 Physical Sciences: Ch 6.1 Gases and solutions
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Questions and Answers

What is the standard temperature in Kelvin at standard temperature and pressure (STP)?

  • 303 K
  • 273 K (correct)
  • 250 K
  • 293 K

    • What is the ideal gas equation?

  • V = nRT
  • pV = nRT (correct)
  • pV = RT
  • n = pV/R

    • What is the volume of one mole of gas at STP?

  • 20.4 dm³
  • 24.5 dm³
  • 25.6 dm³
  • 22.4 dm³ (correct)

    • If there are 2 moles of gas, what is the volume at STP?

    <p>44.8 dm³</p> Signup and view all the answers

    What is the formula used to calculate the volume of a gas involved in a chemical reaction?

    <p>V_A = a/b V_B</p> Signup and view all the answers

    What is the concentration of a solution defined as?

    <p>The number of moles of solute per liter of solution</p> Signup and view all the answers

    What is the formula used to calculate the concentration of a solution?

    <p>C = n/V</p> Signup and view all the answers

    What is the unit of concentration of a solution?

    <p>mol·dm⁻³</p> Signup and view all the answers

    What is the value of R in the ideal gas equation?

    <p>8.31 J·K⁻¹·mol⁻¹</p> Signup and view all the answers

    What is the unit of pressure used in the ideal gas equation?

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

    If a reaction involves 2 moles of gas A and 3 moles of gas B, what is the ratio of their volumes?

    <p>2:3</p> Signup and view all the answers

    What is the concentration of a solution with 2 moles of solute in 4 liters of solution?

    <p>0.5 mol·dm⁻³</p> Signup and view all the answers

    What is the volume of 3 moles of a gas at STP?

    <p>33.6 dm³</p> Signup and view all the answers

    If the volume of gas B is 33.6 dm³, what is the volume of gas A in a reaction with a stoichiometric coefficient ratio of 2:3?

    <p>22.4 dm³</p> Signup and view all the answers

    What is the formula used to calculate the volume of a gas at STP?

    <p>V = 22.4 n</p> Signup and view all the answers

    What is the relationship between the volume of gas A and gas B in a reaction with a stoichiometric coefficient ratio of a:b?

    <p>V_A = (a/b) V_B</p> Signup and view all the answers

    What is the value of the product pV in the ideal gas equation when 1 mole of a gas is at STP?

    <p>2265.9 J</p> Signup and view all the answers

    A reaction involves 2 moles of gas A and 3 moles of gas B. If the volume of gas B is 33.6 dm³, what is the volume of gas A?

    <p>16.8 dm³</p> Signup and view all the answers

    What is the concentration of a solution with 1.5 moles of solute in 2 liters of solution?

    <p>0.75 mol·dm⁻³</p> Signup and view all the answers

    A reaction involves 2 moles of gas A and 1 mole of gas B. If the volume of gas A is 44.8 dm³, what is the volume of gas B?

    <p>22.4 dm³</p> Signup and view all the answers

    What is the volume of 0.5 moles of a gas at STP?

    <p>11.2 dm³</p> Signup and view all the answers

    A solution has a concentration of 2 mol·dm⁻³. If the volume of the solution is 1.5 liters, what is the number of moles of solute?

    <p>3 moles</p> Signup and view all the answers

    A reaction involves 3 moles of gas A and 2 moles of gas B. If the volume of gas A is 67.2 dm³, what is the volume of gas B?

    <p>33.6 dm³</p> Signup and view all the answers

    What is the pressure in the ideal gas equation when 1 mole of a gas is at STP?

    <p>101,300 Pa</p> Signup and view all the answers

    What is the volume of 4 moles of a gas at STP?

    <p>89.6 dm³</p> Signup and view all the answers

    In a reaction, the ratio of the stoichiometric coefficients of gas A to gas B is 2:3. If the volume of gas B is 50.4 dm³, what is the volume of gas A?

    <p>33.6 dm³</p> Signup and view all the answers

    What is the concentration of a solution with 3 moles of solute in 1.5 liters of solution?

    <p>2.0 mol·dm⁻³</p> Signup and view all the answers

    A reaction involves 2 moles of gas A and 3 moles of gas B. If the volume of gas A is 44.8 dm³, what is the volume of gas B?

    <p>67.2 dm³</p> Signup and view all the answers

    What is the number of moles of solute in a solution with a concentration of 1.5 mol·dm⁻³ and a volume of 2 liters?

    <p>2.5 mol</p> Signup and view all the answers

    In a reaction, the ratio of the stoichiometric coefficients of gas A to gas B is 3:2. If the volume of gas A is 67.2 dm³, what is the volume of gas B?

    <p>44.8 dm³</p> Signup and view all the answers

    What is the volume of 2.5 moles of a gas at STP?

    <p>55.0 dm³</p> Signup and view all the answers

    A solution has a concentration of 1.2 mol·dm⁻³. If the volume of the solution is 1.8 liters, what is the number of moles of solute?

    <p>2.16 mol</p> Signup and view all the answers

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