the rate of reaction between calcium carbonate and hydrochloric acid Es

I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a deta... Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a detailed investigation. Formulae ======== The formula for the chemical reaction is: ========================================= CaCO3(s) + 2HCC(l) CaCl2 (aq) + H2O(l) + CO2 ============================================ I can measure the rate of reaction between the two substances using this formula. Rate of Reaction = Change in Concentration ------------------------------------------ Time Taken for Reaction A chemical reaction is the name given to a substance when it changes and becomes a completely new substance. It is difficult to reverse. It happens when particles make effective collisions with sufficient energy. Apparatus ========= Spatula ------- Conical Flask ------------- Burette Stand + Clamps Measuring Cylinder Safety Goggles Beaker Thermometer Stopwatch Kettle + water Small Funnel Delivery Tube + Bung I have chosen to use a measuring cylinder to make my experiment as accurate as I possibly can. I will be wearing the provided safety goggles at all times to protect my eyes, as hydrochloric acid is an irritant that may prove dangerous if it makes contact with the eyes. Theory The following theories will help me decide which variable I will change in my experiment to investigate the rate of reaction using calcium carbonate and hydrochloric acid. Temperature - Collision Theory ============================== The diagram shows particles that are not moving quickly. This means that the chance of these particles colliding and causing a chemical reaction is rather low. The temperature is obviously low too, as the particles have little energy to move quickly. However, if heat were added, the particles would have more energy and move quicker and have a better chance of colliding. This diagram shows particles that are moving quickly. This means... ...respond with my prediction and back it up. As the temperature increases, so does the rate of reaction. If I were to repeat the experiment again, I would work under strict environment, such as in a closed room with no winds or temperature changes. I would also try and use more accurate ways of reading the temperature and keeping the temperature constant, such as by using a water bath. Doing this would possibly make my results even more accurate. I would also try and make my timing even stricter, possibly using a smaller time interval such as 10 seconds instead of 15, to get slightly more accurate results. I may also use a larger range of acids. I only tried the 1 molar acid, but if I were to repeat the experiment again, I would perhaps use 3 and 4 molar acids and test them under high temperatures. I would like to investigate in future the effect of catalysts and surface area on the rate of reaction, to be more conclusive on the subject and widen my knowledge. All in all, my experiment was a success. Everything went well, and I believe that the techniques and methods I used were accurate and sufficient enough to provide me with a sound set of conclusive results.