How would you prepare the following solutions? Unless stated otherwise, assume t

ID: 197654 • Letter: H

Question

How would you prepare the following solutions? Unless stated otherwise, assume that the solvent is purified water and that you will dissolve the solute in a lesser amount of solvent and then “bring the solution to volume”

CuSO4 FW 159.61

NaCl FW 58.44

CaCl FW 111.0

Na2SO4. 10H2O FW 322.04

1. 100 ml of AgNO3 at 2 g/ml

2. 250 ml of NaCl at 2 mg/ml

3. 0.75 L of CuSO4 at 50mg/ml

4. 250 ml KCl at 20 mg/ml

5. 50 ml of 0.1% (w/v) AgNO3

6. 500 ml of 1%( w/v) NaCl

7. 10 ml of 6% (w/v) CuSO4

8. 200 ml of 2% (w/v) KCl

9. 25ml of 20% (v/v) Methanol

10. 2L of 70% (v/v) Ethanol

11. 10 ml of 0.2% (v/v) DMSO

12. 50 ml of 3% (v/v) Propanol

13. 250 ml 12 mM CuSO4

14. 500 ml 0.25M NaCl

15. 500 ml 25mM CaCl

16. 100 ml 300 mM Na2SO4

17.100 ml of 5:3:2 ethylene: chloroform: isoamyl alcohol

18. Convert 50 ppm to g/L

19. Convert 50 ppm to mg/L

20. Convert 5 ppb to ul/l

21. Convert 3 ppm to l/ml

22. Convert 350 ppm to ml/L

23. 300 ppb Cadmium (solid)

Explanation / Answer

Answer:

Use purified water as solvent for dilution. First dilute the solute in lesser amount of solvent and then add more solvent to make the final volume as required.