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Raw Data

The initial temperature was 23C in all the cases.

Qualitative Data (Observations)

HCl was colorless and Magnesium turnings were dark grey in color. When the magnesium turnings were put in the HCl, the reaction quickly started and a gas was

seen to be evolving. The more the mass of Magnesium used, the more intense the reaction was.

Processed Data

Mass of Mg used Total Error for Mass of

Mg used

0.10.0001=0.10.1% 0.1%

0.20.0001=0.20.05% 0.05%

0.30.0001=0.30.033% 0.33%

0.40.0001=0.40.025% 0.025%

0.50.0001=0.50.02% 0.02%

So there are 2 sets or uncertainties for the data used but I shall be only incorporating

Mass of Mg used

(+/- 0.0001)

Rise in Temperature (C)

(+/- 0.05)

Repetition 1 Repetition 2 Repetition 3

0.1g 15 14 120.2g 17 19 16

0.3g 33 30 31

0.4g 40 42 39

0.5g 45 47 48

Mass of Mg

used

(+/- 0.0001)

Rise in Temperature (C) (+/- 0.5)

Mean rise in

temperature (C)

Measuring Error

Repetition 1 Repetition 2 Repetition 3

0.1g 15 14 12 13.66667 (+/- 0.0001)=3.658%

0.2g 17 19 16 17.33333 (+/- 0.0001)=2.884%0.3g 33 30 31 31.33333 (+/- 0.0001)=1.595%

0.4g 40 42 39 40.33333 (+/- 0.0001)=1.239%

0.5g 45 47 48 46.66667 (+/- 0.0001)=1.071%

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Plotted Data

X axis

Mass

(+/- 0.0001)

Y axis

Mean Average Rise in Temperature

0.1g 13.66663.658%% ~13.66664%

0.2g 17.33332.884% ~17.33333%

0.3g 31.33331.595% ~31.33332%

0.4g 40.33331.239% ~40.33331%

0.5g 46.66661.071% ~46.66661%

The above graph shows that as we increase the mass of magnesium turnings used, the average

temperature increases as there are more molecules of magnesium to react with HCl to release more

heat.

0

10

20

30

40

50

60

0.1g 0.2g 0.3g 0.4g 0.5gMeanRiseinTemperature

Mass

Rise in temperature

Rise in temperature