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Multi-step protolysis of phosphoric acid - Digital

Multi-step protolysis of phosphoric acid - Digital

LC1.4.4.1C

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Description

In this experiment, phosphoric acid is titrated with sodium hydroxide solution. In the process the students analyse the first two protolysis stages of phosphoric acid using the titration curve and determine the respective pK_A values graphically.

Components of equipment sets

1	6749040 4	Silicone high vacuum grease, 100 g
1	665997 4	Graduated pipette 10 ml
1	666003 4	Pipetting ball (Peleus ball)
1	666555 4	Universal clamp 0...80 mm
1	30109 4	Bosshead S
1	30121 8	Stand base MF
1	30123 4	Stand feet, pair
2	301271 4	Stand rod 40 cm, 10 mm Ø
1	665212 4	Glass stirring rod 200 x 6 mm Ø
1	664131 4	Beaker Boro 3.3, 400 ml, squat
1	602022 4	Beaker Boro 3.3, 100 ml, squat
1	665843 4	Burette side stopcock, 10 ml
1	665816 4	Burette filling funnel plastic, 35 mm Ø
1	610010 8	Laboratory safety goggles
1	524005W2	Mobile-CASSY 2 WiFi
1	529673 8	pH combination electrode, BNC
1	524452 8	pH Adapter M
1	6744640 4	Buffer solution pH 4.00, 250 ml
1	6744670 4	Buffer solution pH 7.00, 250 ml
1	6738411 4	Sodium hydroxide solution, 0.1 mol/l, 1 l Warning H290
1	6743440 4	Phosphoric acid, 10 %, 100 ml Warning H315 H319
1	6753410 4	Water, pure, 5 l

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Multi-step protolysis of phosphoric acid - Digital

Description

Components of equipment sets

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