Reaction between HCl and CaCO3
...ncentration By increasing the concentration of a reaction, the number of particles also increases. When the concentration is increased, there are more chances the particles to collide with each other. Concentration is a very important factor in rates of reaction. The concentration of a solution can greatly effect a reaction. This is because there will be more particles of the reactant to react with. If the concentration of an acid is increased, the rate of reaction will increase because the collision rate would be higher and the amount of CO2 would be given out more quickly. Below is an example graph as you can see that the high concentration will react. 3. Surface Area One of the reactants is a powder; it has larger and greater surface area to collide with. Therefore the rate of reaction increases. But if the factor is in form of lumps (solid) it has smaller and less surface area to react with therefore rate is slower. 4. Catalyst They provide reactants with a surface area to “stick” to, so they can react. Therefore there is the effect of increasing surface area, which makes reactions faster. E.g. catalyst lowers the activation energy of a reaction. Activation energy is an energy barrier that every reaction has. When this energy is lower by the catalyst the reaction becomes faster. MATERIALS 1. 100ml Gas Syringe (gas collector) 2. 100ml Side-arm flask-this is for the reaction 3. Marble chips (CaCO3) lumps 4. 2M HCl 5. 100ml measuring cylinder (100 ml) use to measure volume of acid 6. 25ml measuring cylinder 7. Stop clock 8. Weighing balance (up to 3 decimal places) 9. Distilled water 10. Thermometer to take the temperature at the beginning and end METHOD · I will set up apparatus as in the diagram. · I measured the volume of acid to 50ml. · I will weigh 0.49 – 0.51g on a weighing balance. I will assume that a slight difference in mass will not affect my results much. · I will put the limestone in the side-arm flask. · I will pour the acid into the contents of the flask. · I will immediately put a rubber bung in the mouth of the flask. · At the same time I will start the stop clock and take results after e...