This experiment gets students to compare pH titration data collected using different indicators. It shows the importance of choosing the correct indicator.
The experiment(s) are easily carried out in 50 minutes and students can do up to 8 titrations during the class. Data is reported back to the teacher and the results shared with the wider class.
Student feedback suggests this is a very useful practical and the repetitive nature of the experiment allows them to fine-tune their experimental skills.
The practical will be useful for those studying acid-base chemistry and buffer systems. Students enrolled in AS-A2 Cambridge or A level courses would find this practical beneficial.
Notes for the teacher are also included
Key words: buffer, acid-base, equivalence point, buffer zone, practical, pKa, indicators.
The experiment(s) are easily carried out in 50 minutes and students can do up to 8 titrations during the class. Data is reported back to the teacher and the results shared with the wider class.
Student feedback suggests this is a very useful practical and the repetitive nature of the experiment allows them to fine-tune their experimental skills.
The practical will be useful for those studying acid-base chemistry and buffer systems. Students enrolled in AS-A2 Cambridge or A level courses would find this practical beneficial.
Notes for the teacher are also included
Key words: buffer, acid-base, equivalence point, buffer zone, practical, pKa, indicators.
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