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
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 volume of acid
Same molar acid
Apparatus