1. Volumetric Analysis 定性分析
Topic IV Acids and Bases
Topic XV Analytical Chemistry

2. Learning outcome Manipulate titration apparatus pipette burette
conical flask
volumetric flask
electrical balance
Detection of end point
Calculations

3. pipette Washing tap water deionised water solution to be transferred
Transfer solution via pipette

4. Burette Washing tap water deionised water solution to be filled in
Air bubbles
Control the burette
Reading : 0.02 cm³

5. Conical flask / volumetric flask
Washing
tap water
deionised water

6. Case I Technique approach Four experiments are arranged
HCl(aq) vs NaOH(aq)
Preparation of standard Na2CO3(aq)
Titration of Na2CO3(aq) vs HCl(aq)
Titration of CH3CO2H(aq) vs NaOH(aq)

7. Experiment 1 Titration : HCl(aq) vs NaOH(aq)
Pipette and pipette filler
Burette, conical flask
Burette reading 0.02 cm³
End point of titration
methyl orange

8. Experiment 2 Preparation standard Na2CO3(aq) solution
Weighing bottle, electrical balance
Dissolve the solid
Pour the solution into a volumetric flask
Graduation mark of volumetric flask

9. Experiment 3 Titration Na2CO3(aq) vs HCl(aq) pipette burette end point
methyl red

10. Experiment 4 (a) Assessment Titration : CH3CO2H(aq) vs NaOH(aq)
(I) Dilution of a vinegar solution
pipette
volumetric flask

11. Experiment 4 (b) Assessment (II) Titration :
dilute vinegar solution vs NaOH(aq)
Pipette
Burette, conical flask
Burette reading 0.02 cm³
End point of titration
phenolphthalein
Calculations

12. Case II Concept approach Three experiments are arranged
Preparation of Na2CO3(aq)
Titration of Na2CO3(aq) vs HCl(aq)
Titration of HCl(aq) vs NaOH(aq)

13. Experiment 1 Preparation standard Na2CO3(aq) solution Weighing bottle
Dissolving the solid
Pour the solution into a volumetric flask
Graduation mark of volumetric flask

14. Experiment 2 Titration Na2CO3(aq) vs HCl(aq)
pipette and pipette filler
burette, conical flask
end point
methyl orange

15. Experiment 3 (a) Assessment Titration : HCl(aq) vs NaOH(aq)
(I) Dilution of a NaOH(aq) solution
pipette
volumetric flask

16. Experiment 3 (b) Assessment (II) Titration :
dilute NaOH(aq) vs HCl(aq)
Pipette
Burette, conical flask
Burette reading 0.02 cm³
End point of titration
methyl red
Calculations

17. Case III Concept approach Three experiments are arranged
Preparation of oxalic acid, HO2CCO2H(aq)
Titration of HO2CCO2H(aq) vs NaOH(aq)
Titration of HCl(aq) vs NaOH(aq)

18. Experiments Titration of oxalic acid vs NaOH(aq) phenolphthalein
Titration of HCl(aq) vs NaOH(aq)
methyl orange