Reaction Rates of Marble Chips

How can we speed up the reaction between Calcium Carbonate and Hydrochloric Acid?

Contents

1. Plan
 Aim
 Equipment
 Variable Factors
 Prediction
 Method
 Trial Run

2. Results
 Results Tables

3. Analysis and Conclusions
 Graphs
 Conclusions

4. Evaluation
 Accuracy Of Results
 Reliability
 Improvements
 Extending the Investigation

1. Plan

Aim

I am doing this experiment to find out how I can speed up the reaction rate between calcium carbonate and hydrochloric acid.

Equipment

This is the equipment I will use:

 Gas Syringe
 Glass Flask
 Calcium Carbonate
 Hydrochloric Acid

Variable Factors

The factors that could slow down or speed up this reaction are:

 The size of the Calcium Carbonate (marble) pieces – This will affect how fast the acid reacts with the marble, the smaller the pieces, the bigger the surface area so the reaction can take place faster.
 The amount of Calcium Carbonate – The more calcium carbonate there is, the more carbon dioxide will be produced and the larger the reaction will be.
 The amount of Hydrochloric Acid – The more hydrochloric acid there is, the more carbon dioxide will be produced and the larger the reaction will be.
 The temperature of the materials – The temperature of the materials determines how fast the reaction will take place. The hotter the materials, the faster the reaction and vice-versa.
 The concentration of Hydrochloric Acid – The higher the concentration (strength) of the acid, the faster it will react.
 The purity of the Calcium Carbonate pieces – The purity of the calcium carbonate will affect the speed of the reaction also.

Prediction

From previous experiments I have learned that if large pieces are broken into smaller pieces they react faster because they have more