(BBC,2014). sintering of coke and iron ore in the blast furnace) in order to increase the surface area. Graph B is the graph which is most likely to be produced from experiment 6. The effect of surface area on rates of reaction. The results showed that the research and hypothesis were all accurate, and the results were that the larger is surface area is the fast it will react. To not run with chemicals, and watch what you are doing with your body parts. Into two beakers pour an equal volume of dilute hydrochloric acid about 20cm 3; Add a small spatula load of magnesium powder to one beaker an at the same time a small piece of magnesium ribbon to the other [online] Available at: https://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/Kinetics/Modeling_Reaction_Kinetics/Collision_Theory [Accessed 14 Mar. calcium carbonate + hydrochloric acid calcium chloride + carbon dioxide + water, CaCo³ + 2HCI CaCl² + H2O + CO² (Chemguide, 2013). Reload the graph using the button on its toolbar, pour the acid into the flask and then unpause the simulation. This is another familiar lab reaction. Not being able to complete the whole reaction for the small and medium surface area reactions was something that didn’t work. The larger surface area can also act as a Catalyst. Alongside the crushed calcium carbonate will be two other different grades of Calcium Carbonate which will have a lower surface area to each other. Increasing the surface area by finely crushing solid reactants increases the rate dramatically as a result of more successful reactant collisions per second. Surface area is used in many different scenarios in the world to this day. Company Registration No: 4964706. Wet and dry wipe table with disinfectant, ensuring all chemicals have been removed off the surface. (2017). The independent variable that will be changed is the surface area of the calcium carbonate (small, medium, large). 4.3 Modifications Bubbling reaction, makes liquid cloudy, sizzling noise, reaction is slow, little bubbles, slowed at 8 mins. Add all 3 Different grades of Calcium Carbonate to each one of the beakers (make sure Calcium Carbonate is placed in each beaker with care.) An investigation of the reaction between marble chips and hydrochloric acid: Marble chips, calcium carbonate (CaCO 3) react with hydrochloric acid (HCl) to produce carbon dioxide gas. This technique has many practical applications where a fast rate of reaction is essential. Disclaimer: This work has been submitted by a university student. Is it possible to measure the surface area of a powder sample, and thus find a mathematical relationship between surface area and rate? The exercise measures the rate of reaction very simply, and complex maths is not required. Will the smaller surface area Calcium carbonate have a faster reaction rate than the larger surface area Calcium carbonate. Solid manganese(IV) oxide is often used as the catalyst. Increasing the surface area of a solid. Will increasing the surface are of Calcium Carbonate speed up the reaction rate? Do not try to cool glass down with cold water otherwise it will smash. Calcium chloride solution is also formed. But the experiment was successful in finding the result we were looking for, not only because of chemical reason but because of how our group worked together as well. What happens to the rate of the reaction as the surface area increases? For example, in custard powder factories, there is a high rate of the custard powder exploding, because of the larger surface area. When the reaction completely stopped, all chemicals are tipped into the sink and the sink is washed clean of chemicals. Setup should look like this: Start timer and record results in a table as shown below. This diagram shows the reaction rate of a greater surface area (blue) is much faster than the smaller surface area (red). Free resources to assist you with your university studies! The reaction rate can be increased by increasing the surface area (crushed material). The small the surface area was, the slower the reaction was, but the experiment did have some mishaps, which can be easily be tweaked to be the perfect experiment. The different grade’s reaction times will be compared to each other in 3 different experiments. AIM: My aim is to investigate how changing the surface area of Calcium carbonate affects the rate of reaction with hydrochloric acid. Write down the samples of calcium carbonate you used in increasing order of surface area. It is hypothesised that when the surface area is increased, the reaction rate will speed up. This increases the rate. This time pause the simulation after 100 cm, To calculate the rate of the reaction, divide 100 cm. Our group went together like peas and carrots. The graphs both show that all of the experiments were very similar. All equipment that has been used is cleaned, and packed into the box. This happens because by increasing the surface area we are also increasing the rate of collisions between the particles. Chemguide.co.uk. The Experiments went according to plan, and there were no mishaps. All work is written to order. [online] Available at: http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_gateway/chemical_economics/reaction3rev1.shtml [Accessed 14 Mar. Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.