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Technical data


Titration of a weak acid with a weak base with the aid of a suitable indicator

Article no: P7510900

Principle

During this experiment, the students have to determine the unknown concentration of an acetic acid solution (solution to be analysed) with the aid of a suitable indicator (here: bromothymol blue). For this purpose, a known volume of the acid is titrated with a volume of an amomonia solution of a known concentration (standard solution) until the indicator changes colour. The used volume of the standard solution and its concentration are then used to calculate the concentration of the solution being analysed.


Learning objectives

  •  Titration of a weak acid

 

Benefits

  • Experiment literature available for pupils and teachers: Minimum preparation time
  • Simple teaching and efficient learning by using the available interactive experiment literature

 

Scope of delivery

Burette with straight stopcock, 25 ml Graduation 0.1 ml 47153-01 1
Pipette with rubber bulb 64701-00 1
Erlenmeyer flasks, Boro, wide neck, various sizes 46151-00 1
Funnel, diameter = 40 mm, plastic (PP) 36888-00 1
Graduated pipette, 5 ml : 0,1 36599-00 1
Protecting glasses, clear glass 39316-00 1
Pipettor,bulb,3 valves,100ml max. 47127-02 1
Burette clamp, roller mount.,1pl. 37720-01 1
Support base, variable 02001-00 1
Stand rods, stainless steel, various sizes 02059-00 1
Wash bottle, 250 ml, plastic 33930-00 1
Laboratory pen, waterproof, black 38711-00 1
Ammonia solution, 25%, 250 ml 30933-25 1
Bromothymol blue, 0.1% sol. 50 ml 48004-05 1
Water, distilled 5 l 31246-81 1
Acetic acid 99...100%, 500 ml 31301-50 1
Beaker, 50 ml, plastic (PP) 36080-00 2

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com