Grade 10 Analytical chemistry worksheet

What is on the worksheet

1. A 80 mL aliquot at 1.3 mol/L is diluted to 960 mL total without reaction or loss. Find the final concentration. Round to 3 decimal places if needed. Answer in mol/L.

2. Measured from the same origin, a spot travels 18 mm and the solvent front 95 mm. Find Rf. Round to 3 decimal places if needed.

3. The theoretical dry pure product mass is 153 g; the actual dry pure product mass is 16 g. Find percentage yield. Round to 3 decimal places if needed. Answer in %.

4. A model solution contains 14 g solute and 80 g solvent. Find the solute mass percentage. Round to 3 decimal places if needed. Answer in %.

5. Measured from the same origin, a spot travels 38 mm and the solvent front 48 mm. Find Rf. Round to 3 decimal places if needed.

6. An aqueous solution has concentration 1.5 mol/L. A model aliquot has volume 449 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

7. A model solution contains 43 g solute and 128 g solvent. Find the solute mass percentage. Round to 3 decimal places if needed. Answer in %.

8. An aqueous solution has concentration 1.2 mol/L. A model aliquot has volume 431 mL. Find the solute amount. Round to 3 decimal places if needed. Answer in mol.

9. A model solution contains 0.2 mol in a final volume of 0.26 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

10. A model solution contains 6 g solute and 307 g solvent. Find the solute mass percentage. Round to 3 decimal places if needed. Answer in %.

11. A model solution contains 3.6 mol in a final volume of 1.64 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

12. Measured from the same origin, a spot travels 11 mm and the solvent front 78 mm. Find Rf. Round to 3 decimal places if needed.

13. A 92 mL aliquot at 1.7 mol/L is diluted to 552 mL total without reaction or loss. Find the final concentration. Round to 3 decimal places if needed. Answer in mol/L.

14. A supplied valid-range calibration is S = 6c + 0.9. The signal is 7.8. Find c in the calibration's arbitrary concentration units. Round to 3 decimal places if needed.

15. A model solution contains 3.2 mol in a final volume of 0.64 L. Find its molar concentration. Round to 3 decimal places if needed. Answer in mol/L.

16. Measured from the same origin, a spot travels 71 mm and the solvent front 108 mm. Find Rf. Round to 3 decimal places if needed.

17. A 219 g sample is 82% desired substance by mass. Find the desired substance mass. Round to 3 decimal places if needed. Answer in g.

18. A supplied valid-range calibration is S = 20c + 0.8. The signal is 8.2. Find c in the calibration's arbitrary concentration units. Round to 3 decimal places if needed.

19. A model solution contains 11 g solute and 333 g solvent. Find the solute mass percentage. Round to 3 decimal places if needed. Answer in %.

20. A 21 mL aliquot at 1.6 mol/L is diluted to 210 mL total without reaction or loss. Find the final concentration. Round to 3 decimal places if needed. Answer in mol/L.