Rates of Reaction Practical
Aim:
The aim of this investigation is to investigate how the rate of reaction of Calcium Carbonate (CaCO3) with Hydrochloric acid (HCl) could be affected by surface area.
Equation:
HCl(aq) + CaCO3(s) CaCl2(aq) + CO2(g) + H2O(l)
Hypothesis:
I predict that the more the surface area the faster the rate of reaction because it increases the chances of collision. This is because more calcium carbonate is exposed to the acid molecules so they are more likely to collide. When measured in the same mass the smaller chips have a larger surface area altogether. Here is a diagram to show this:
(if cut into 8 equal pieces)
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Teacher Reviews
Here's what a teacher thought of this essay
The report is fairly straight forward. The experiment is of limited complexity and requires a limited degree of precision. The data collected is of a reasonable quality. However the lack of repeats limits the reliability. There are improvements suggested throughout.