Investigating the Rate of Reaction Between Marble Chips and Hydrochloric Acid

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Investigating the Rate of Reaction Between Marble Chips and Hydrochloric Acid I am investigating the rate of reaction between marble chips (calcium

carbonate) and hydrochloric acid. To find out about this, I am going

to keep all other variables constant except the concentration of the

hydrochloric acid.

The equation of this reaction is:

CaCO3 + 2HCl → CaCl2 + Co2 + H2O

Calcium carbonate + hydrochloric acid → Calcium chloride+ Carbon

dioxide + Water.

I predict that the higher the concentration of the acid, the faster

the rate of reaction is between the calcium carbonate and hydrochloric

acid, in other words, the rate of reaction is directly proportional to

concentration of acid.

My graph of results will probably look something like this:

This prediction can be supported by the theory that acid concentration

is the amount of acid particles in a given volume. A higher acid

concentration means that there are more acid particles in a given

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