The diagram below represents a set-up that can be used to prepare and collect oxygen

The diagram below represents a set-up that can be used to prepare and collect oxygen

a) Write an equation for the reaction that takes place.
b) What property of oxygen makes it possible for its collection as indicated by the diagram?
c) Explain why it is important not to collect any gas for the first few seconds of the experiment.

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a) 2H₂O₂(l) $\rightarrow$ 2H₂O(l) + O₂(g)

b) Oxygen is insoluble (or slightly soluble) in water.

c) To ensure that the air that occupied the apparatus initially is expelled.

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johnmulu answered the question on April 6, 2017 at 08:57

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