Concentrations and volumes of solutions

Last updated: 06/02/2020
AQA A-Level Chemistry Amount of substance Concentrations and volumes of solutions
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  1. Current
  2. Review
  3. Answered

  1. What is the definition of a standard solution?

    • 1.
    • 2.
    • 3.
    • 4.

  2. What is the definition of a concentrated solution?

    • 1.
    • 2.
    • 3.
    • 4.

  3. What is the definition of a diluted solution?

    • 1.
    • 2.
    • 3.
    • 4.

  4. What is the definition of the concentration of a solution?

    • 1.
    • 2.
    • 3.
    • 4.

  5. What is the equation, including concentration, that is used to find the number of moles?

    • 1.
    • 2.
    • 3.
    • 4.

  6. What does the term ‘molar’ mean?

    • 1.
    • 2.
    • 3.
    • 4.

  7. Calculate the number of moles of solute dissolved in 3500 cm3^3 of a solution with a concentration of 0.25 mol dm−3^{-3} . Leave your answer to two significant figures.

    • 1.
    • 2.
    • 3.
    • 4.

  8. Calculate the concentration in, mol dm−3^{-3}, of 1.25 mol of solute dissolved in 450 cm3^3. Leave your answer to one decimal place.

    • 1.
    • 2.
    • 3.
    • 4.

  9. Calculate the concentration in, mol dm−3^{-3}, of 0.88 mol of solute dissolved in 6 dm3^3. Leave your answer to one decimal place.

    • 1.
    • 2.
    • 3.
    • 4.

  10. Calculate the number of moles of solute dissolved in 5.5 dm3^3 of a solution with a concentration of 0.5 mol dm−3^{-3}. Leave your answer to two significant figures.

    • 1.
    • 2.
    • 3.
    • 4.

  11. Calculate the concentration in, mol dm−3^{-3}, of 1.955 mol of solute dissolved in 550 cm3^3 . Leave your answer to two decimal places.

    • 1.
    • 2.
    • 3.
    • 4.

  12. Calculate the number of moles of solute dissolved in 12 dm3^3 of a solution with a concentration of 0.725 mol dm−3^{-3}. Leave your answer to one significant figure.

    • 1.
    • 2.
    • 3.
    • 4.

  13. Calculate the mass of H2_2O needed to prepare 7.5 dm3^3 of a solution with a concentration 0.25 mol dm−3^{-3}. Leave your answer to two decimal places.

    • 1.
    • 2.
    • 3.
    • 4.

  14. Calculate the mass of Cl2_2 needed to prepare 3.5 dm3^3 of a solution with a concentration of 0.0125 mol dm−3^{-3}. Leave your answer to one decimal place.

    • 1.
    • 2.
    • 3.
    • 4.

  15. Calculate the number of moles of solute dissolved in 25 cm3^3 of a solution with a concentration of 1.5 mol dm−3^{-3} . Leave your answer to two significant figures.

    • 1.
    • 2.
    • 3.
    • 4.

  16. Calculate the mass of NaCl needed to prepare 68 cm3^3 of a solution with a concentration 0.2 mol dm−3^{-3}. Leave your answer to two significant figures.

    • 1.
    • 2.
    • 3.
    • 4.

  17. Calculate the number of moles of solute dissolved in 150 cm3^3 of a solution with a concentration of 3.05 mol dm−3^{-3}. Leave your answer to two significant figures.

    • 1.
    • 2.
    • 3.
    • 4.

  18. Calculate the concentration in, mol dm−3^{-3}, of 0.125 mol of solute dissolved in 5 dm3^3. Leave your answer to two decimal places.

    • 1.
    • 2.
    • 3.
    • 4.