Viscosity of Propan-1-ol, Propane 1,2-diol and Propane 1,2,3-triol.
   
     

PR5.2 Viscosity in Alcohols

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This video demonstrates the viscosity of Propan 1-ol, Propane 1,2-diol and Propane 1,2,3-triol. A small ball of blutack is dropped into a test tube of each of the alcohols and the speed of its flow demonstrates the viscosity. Viscosity can be explained in terms of the intermolecular forces present in each of the alcohols.

Right click here and open a new window for a word document which includes questions which can be used during and after a practical demonstration or video presentation.

For further information see Salters Advanced Chemistry, 2000, Activities and Assessment Pack, Second Edition, ISBN 0 435 631217