Marble and Acid Investigation
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Concentration (M)
Time (seconds)
4
10
0.2
63.01
8
20
0.4
21.80
12
30
0.6
11.75
16
40
0.8
7.50
20
50
1.0
4.32
24
60
1.2
4.01
28
70
1.4
3.26
32
80
1.6
2.65
36
90
1.8
2.22
40
100
2.0
2.19 Conclusions
After completion of the experiment, the following conclusions were made: As predicted, the rate of reaction increased as the concentration increased. However, beyond that it is difficult to come to a firm conclusion since the two sets of results make two wildly differing graphs. Set 1 clearly shows a curve whereas Set 2 would appear to fit more to a straight line. Because of this, both sets will be analysed separately and an explanation put forward for each:
Set 1: The curve appears to climb slowly to begin with and then gets steeper towards the end. A possible explanation for this would be that at lo ...
