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Technical data


Titration of a strong acid with a strong base using various indicators with Cobra SMARTsense

Article no: P7510669

Principle

Acid-base titration with the aid of the Cobra SMARTsense pH is used in analytical chemistry for the preliminary examination of corresponding solutions. With its help, statements can be made about the concentration of the substance under investigation.
In this experiment, the students determine the concentration of a hydrochloric acid solution with the help of the Cobra SMARTsense pH. To do this, a known volume of this acid is titrated with a volume of a sodium hydroxide solution of known concentration. The concentration of the hydrochloric acid is then calculated from the consumed volume of the titrated solution and its concentration. The students should be shown by way of example the use of a pH meter in analytical chemistry.


Learning objectives

  • Titration of a strong acid 

 

Benefits

  • Easy digital pH value determination with the aid of the Cobra SMARTsense pH

  • Experimental literature available for pupils and teachers: Minimal preparation time

  • Easy teaching and efficient learning when using the available interactive experimental literature

 

Scope of delivery

Stand rods, stainless steel, various sizes 02059-00 1
Burette with straight glass stopcock, 10 ml 47152-03 1
Graduated pipette, 5 ml : 0,1 36599-00 1
Funnel, diameter = 40 mm, plastic (PP) 36888-00 1
Wash bottle, 250 ml, plastic 33930-00 1
Beaker, 50 ml, plastic (PP) 36080-00 1
Protecting glasses, clear glass 39316-00 1
Erlenmeyer flasks, Boro, wide neck, various sizes 46151-00 1
Laboratory pen, waterproof, black 38711-00 1
Pipette with rubber bulb 64701-00 1
Pipettor,bulb,3 valves,100ml max. 47127-02 1
Burette clamp, roller mount.,1pl. 37720-01 1
Support base, variable 02001-00 1
Cobra SMARTsense pH - Sensor for measuring the pH value 0 ... 14 (Bluetooth) 12921-00 1
Hydrochloric acid 37 %, 1000 ml 30214-70 1
Water, distilled 5 l 31246-81 1
Buffer solution tablets pH4, 100 30281-10 1
Buffer solution tablets pH10, 100 30283-10 1
Phenolphthalein, 0,5% soution in ethanol, 100 ml 31715-10 1
Methyl orange soln., 0.1% 250 ml 31573-25 1
Bromothymol blue, 0.1% sol. 50 ml 48004-05 1
Sodium hydroxide, pellets, 500 g 30157-50 1

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