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Grade 9 · Chemistry

Grade 9 Analytical chemistry worksheet

20 questions on analytical chemistry. The answer key is a separate download.

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What is on the worksheet

  1. Measured from the same origin, a spot travels 12 mm and the solvent front 120 mm. Find Rf. Round to 3 decimal places if needed.

  2. Measured from the same origin, a spot travels 21 mm and the solvent front 47 mm. Find Rf. Round to 3 decimal places if needed.

  3. A 17 mL aliquot at 1.7 mol/L is diluted to 204 mL total without reaction or loss. Find the final concentration. Round to 3 decimal places if needed. Answer in mol/L.

  4. Measured from the same origin, a spot travels 12 mm and the solvent front 33 mm. Find Rf. Round to 3 decimal places if needed.

  5. An aqueous solution has concentration 1.9 mol/L. A model aliquot has volume 44 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

  6. A model solution contains 0.8 mol in a final volume of 0.32 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

  7. A 92 mL aliquot at 0.6 mol/L is diluted to 460 mL total without reaction or loss. Find the final concentration. Round to 3 decimal places if needed. Answer in mol/L.

  8. Measured from the same origin, a spot travels 53 mm and the solvent front 106 mm. Find Rf. Round to 3 decimal places if needed.

  9. An aqueous solution has concentration 0.9 mol/L. A model aliquot has volume 237 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

  10. A model solution contains 2.9 mol in a final volume of 1.51 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

  11. A model solution contains 1.8 mol in a final volume of 0.15 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

  12. The theoretical dry pure product mass is 37 g; the actual dry pure product mass is 28 g. Find percentage yield. Round to 3 decimal places if needed. Answer in %.

  13. Measured from the same origin, a spot travels 82 mm and the solvent front 96 mm. Find Rf. Round to 3 decimal places if needed.

  14. A model solution contains 1.3 mol in a final volume of 0.23 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

  15. An aqueous solution has concentration 1.6 mol/L. A model aliquot has volume 242 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

  16. Measured from the same origin, a spot travels 5 mm and the solvent front 69 mm. Find Rf. Round to 3 decimal places if needed.

  17. The theoretical dry pure product mass is 51 g; the actual dry pure product mass is 22 g. Find percentage yield. Round to 3 decimal places if needed. Answer in %.

  18. A model solution contains 3.7 mol in a final volume of 1.51 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

  19. An aqueous solution has concentration 1.2 mol/L. A model aliquot has volume 54 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

  20. An aqueous solution has concentration 0.8 mol/L. A model aliquot has volume 310 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

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