Y12 Non-metals. Lab preparation of Chlorine+Test

Carried out in a fume cupboard because of the highly poisonous nature of chlorine. Concentrated hydrochloric acid should be added in a slow drop-wise fashion to a small amount of potassium permanganate solid. Limited to recording... Carried out in a fume cupboard because of the highly poisonous nature of chlorine. Concentrated hydrochloric acid should be added in a slow drop-wise fashion to a small amount of potassium permanganate solid. Limited to recording time - I needed to carry out the reaction more speedily! The reaction was slow to start, but became vigorous after a few minutes 2HCl + [O] = Cl2 + H2O No need for the full equation. Just represent the potassium permanganate with the symbol [O]. This stands for any oxidising agent. Chlorine, more than twice as dense as air, is collected by upward displacement of air. Other relevant equations, referred to in the video, are: Cl2(g) + H2O(l) = HCl(aq) + HOCl(aq) 2Fe(s) + 3Cl2(g) = 2FeCl3(s)
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