GCSE Chemistry - Limestone and Carbon Dioxide Coursework

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GCSE Chemistry - Limestone and Carbon Dioxide Coursework

Hypothesis

I think that the smaller limestone chips will produce the greater amount of carbon dioxide than the larger chips as there will be a greater surface area for the acid to react upon. This is because the greater the surface area the higher the amount of collisions between limestone and acid particles. Therefore the smaller chips will lose a greater mass.

The formula for this reaction is

Marble + Hydrochloric = Carbon + Water + Calcium
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Chips Acid Dioxide Chloride

CaCO3(s) + 2HCL(aq) = CO2(G) + H2O(l) + CACL2(aq)

Method

· Set up apparatus as shown in diagram.

· Weigh the correct mass of limestone.

· Add acid to the limestone and record the change in mass.

· Repeat for each chip size.

Safety

· Be careful handling the acid.

· Wear goggles at all times.

· Be careful dropping limestone into glass beakers.

Fair Test

Variable

Particle Size

Factors remaining the same

Same mass of limestone

Same ...

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