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Rates of reaction

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Question 22

Hydrogen peroxide decomposes slowly at room temperature to form water and oxygen gas. The reaction is catalysed by manganese(IV) oxide.

2H2O2(aq)→MnO2(s)2H2O(l)+O2(g) 2\text{H}_2\text{O}_2(\text{aq}) \xrightarrow{\text{MnO}_2(\text{s})} 2\text{H}_2\text{O}(\text{l}) + \text{O}_2(\text{g}) 2H2​O2​(aq)MnO2​(s)​2H2​O(l)+O2​(g)

A student wants to investigate how the rate of this reaction is affected by the temperature of the hydrogen peroxide solution. They plan to use the gas collection apparatus shown below.

Gas Collection Setup

Devise a method the student could use to obtain a range of results at different temperatures.

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