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Determining the activation energy for the reaction between bromide and bromate(v) ions Chemistry Portfolio By Clement Ng 12.6 Data Collection Quantitative Data: Temperature () () Time taken to turn clear (s) () 75 6.0 65 8.0 55 15.3 47 26.3 36 76.0 25 240.0 Errors: - () Temperature error As contents in boiling tube may not be the same as the temperature in the water bath, due to heat lost in transfer process through glass. Furthermore, during the mixing of the contents, boiling tubes were removed from water bath, lowering the supposed temperature. Even though after mixing, the boiling tubes were immediately placed back into the water bath, temperature in water bath is already altered, further increasing the temperature error. - () Time error This was due firstly to the reaction time needed to press the start and stop button on the stopwatch. Secondly, it is very hard to detect the colour change; is it truly clear, or is it still faint in red colour. Therefore the stopwatch maybe stopped a little...

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