![]() Read our standard health and safety guidance.Acidified potassium manganate(VII) solution, about 0.002 M, about 2 cm 3.Bromine water, 0.01 M – diluted to a pale yellow-orange colour, (HARMFUL), about 2 cm 3.Porous pot or pumice stone fragments (note 10).Medicinal (liquid) paraffin (not the fuel), about 2 cm 3.Small glass trough or plastic basin, for gas collection over water.Delivery tube fitted with a Bunsen valve (note 5).The mixture is flammable and decolourises bromine water and acidified permanganate ions. Liquid paraffin is vaporised and passed over a hot pumice stone catalyst, producing a mixture of gaseous short-chain hydrocarbons. ![]() RSC Yusuf Hamied Inspirational Science Programme.Introductory maths for higher education.The physics of restoration and conservation.
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