Core practical 14 - Determine the activation energy for the reaction between bromide ions and bromate(V) ions
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4 Terms
1
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Write an equation for the reaction between bromine and phenol.
C6H5OH + 3Br2 → C6H2Br3OH + 3HBr
2
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What function does the methyl red have in this experiment?
When all the phenol has reacted, the bromine continuously produced in the first reaction will then react with the methyl red indicator, bleaching its colour.
3
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Measure the gradient of your graph.
Depends on your data but using the sample data, the answer should be approximately 6816.
4
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Calculate the activation energy of the reaction, Ea.
Ea = 56668 to 56676 Jmol−1 approximately
Note 
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