Permanganates, decompositions

Attempts to relate the kinetic characteristics of permanganate decompositions to the nature of the constituent cation have been discussed by Young [29]. 

Filling the Gas Meter with Oxygen. Measure the volume of the meter. Write the equation of potassium permanganate decomposition. Calculate how many grammes of the salt have to be taken for the evolved oxygen to fill the gas meter up to two-thirds of its volume. 

Procedure A piece of annealed asbestos is inserted and gently pressed into the tube (it is held by the constriction of the tube) and 1 mg of the sample well mixed with 50 mg of the silver permanganate decomposition product is added on the filtration layer thus formed. The layer of the mixture is tightened with a lump of asbestos. Liquids are introduced with a capillary pipette on the... 

The presence of hydrogen manifests itself immediately after the oxidation of the organic substance with silver permanganate decomposition product by the formation of small droplets of water condensed on the cool sides of the decomposition tube. 

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