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Technical data


Alco test-tubes

Article no: P7171800
Principle

The Alco test-tube contains mainly the sulphate of potassium dichromate (acidified with sulphuric acid), which is reduced to potassium sulphate and chromium sulphate:
Cr6+ + 3 e- → Cr3+

In a parallel test air could be pumped through water to show that ethanol is the reducing agent. In the context of this experiment the danger of "drinking and driving" could be discussed.

Learning objectives

  • Alcohols can be oxidized by oxidizing agents.
  • The presence of alcohol can be detected by the use of coloured oxidizing agents

Benefits

  • Easy teaching and efficient learning by using interactive experimentation PHYWE-Software
  • Experiment is part of a complete solution set with experiments for the topic Organic Chemistry matched with international curriculum: all topics are covered

 

Scope of delivery

Support base, variable 02001-00 1
Stand rods, stainless steel, various sizes 02059-00 1
Boss head 02043-00 1
Glass tubes,right-angled MAU-10030701 1
Test tube,180x20 mm,side arm,PN19 MAU-17080301 1
Test tube brush w. wool tip,d20mm 38762-00 1
Universal clamp 37715-01 1
Rubber stopper, d = 22/17 mm, 1 hole 39255-01 1
Rubber hose, various diameters 39282-00 1
Rubber bulb, double 39287-00 1
Protecting glasses, clear glass 39316-00 1
Glycerol, 250 ml 30084-25 1

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