From the pH value to the pKa value - Digital

From the pH value to the pKa value - Digital
From the pH value to the pKa value - Digital


In this experiment the students compare the pH value of hydrochloric acid solutions that have different concentrations with acetic acid solutions. They find that the pH value changes differently despite the same change in concentration of hydrochloric acid and acetic acid and justify this with the degree of dissociation of these acids. They also discover that there are strong and weak acids. In this context, the pKa value for weak acids can be introduced.

Components of equipment sets

1 30945  4 
Universal pencil LD
1 665997  4 
Graduated pipette 10 ml LD
1 666003  4 
Pipetting ball (Peleus ball) LD
2 664131  4 
Beaker Boro 3.3, 400 ml, squat LD
4 602022  4 
Beaker Boro 3.3, 100 ml, squat LD
1 524005W2
Mobile-CASSY 2 WiFi LD
1 524452  8 
pH Adapter M LD
1 529673  8 
pH combination electrode, BNC LD
1 610010  8 
Laboratory safety goggles LD
1 6744640  4 
Buffer solution pH 4.00, 250 ml LD
1 6744670  4 
Buffer solution pH 7.00, 250 ml LD
1 6746960  4 
Hydrochloric acid, 0.1 mol/l, 1 l LD
GHS05 Warning H290
1 6719570  4 
Acetic acid, 0.1 mol/l, 1 l LD
1 6753410  4 
Water, pure, 5 l LD
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