It is spread on fields to neutralise acidic compounds in the soil and to supply calcium, which is an essential plant nutrient. · I will weigh 0. To further explore the fact I further predict that the rate of reaction will double for every 10° C rise in temperature. I will use 40cm3 of hydrochloric acid instead of 50cm3. The other main control variable was human error, which we could control by taking our time, not hurrying and staying focused during our experiment.
So I will take 7 readings at 0, 20, 40, 60, 80, 100 and 120 seconds. My preliminary results are as follows: Volume Time secs 2 1. Also in this report will be an outline. So, one product would be CaCl 2 The other product is what is left over. If the pieces of calcium carbonate are smaller than medium sized then there will be more area exposed and therefore able to collide and react, and therefore it will give off more carbon dioxide.
Clearly, you only need to try and understand the subjects that your son studies. Now, I haven't read the wikipedia article you refer to, but either it is misleading or you are reading it wrong. It is hard to find time for experiments when you have to spend time on 6th grade level of math and heaven forbid applied algebra. The calcium displaces the hydrogen from the hydrochloric acid which results in calcium chloride marble in being formed I chose concentration as the variable because of its ease in changing in comparison to the other variables — temperature, surface area, concentration and catalyst. Aim To investigate the size of the chips and the volume of hydrochloric acid used, so that in the main experiment I have little difficulty and reasonable values. So, ideally, in my experiment, the higher the concentration of acid the higher the rate of reaction and the more carbon dioxide is produced.
Safety: For safety I will wear safety goggles to protect my eyes from the possibility of the acid splashing on my face. So when working with strong acids, you should always have neutralizers at hand — weak alkaline solutions, kitchen soda etc. Additionally I predict that the volume of hydrochloric acid used in the main experiment will be 20 or 25cm3 because similarly it will give a time not too long but not too quick. Stomach acid is hydrochloric acid, so calcium carbonate is commonly used as an antacid because the products of this reaction are harmless to humans. How can you tell that a reaction has taken place? The predicted reaction additionally tells us that although the calcium carbonate or marble is soluble in water, the gas that is produced from this reaction carbon dioxide is not as it displaces the water. I will not add a catalyst to my solution and I will not stir my solution. Also I think that my results are shown clearly in the graph and table above and reflect the success of my experiment.
The compounds you will work with do have some hazards associated with them. Investigating the rate of reaction between Marble Chips Calcium Carbonate and hydrochloric acid Aim. From this equation, it is evident to us that hydrochloric acid has a large effect on the reaction. Evaluation I believe that the data we obtained from our experiments was as reliable as possible. Calcium carbonate is in all kinds of things though, like eggshells and lime, and it's found in a lot of rocks. H Cl + calcium carbonate calcium chloride + carbon dioxide + water. Not only was it a more advanced and more calculated experiment it, the results reflect what I was trying to find out in a clear and exact manor.
All natural sciences are subjects that only a few follow, and we lack technicians in that matter. A chemical reaction is defined as the process that involves rearrangement of the ionic structure of a substance. Method 3: Measuring loss of Mass Reaction takes place in a flask. And he also loved cheeses so, when he went on a cheese tasting trip, he managed to eat a cheese with a particularly bad strain of fungus on it. Also in this report will be an outline. The rate of reaction increases when the surface area of a solid reactant is increased. · I will weigh out 1g of Calcium Carbonate powder on very accurate electronic scales.
So therefore, the more particles you have in a space, the more likely they going to collide. The reaction is not, strictly speaking, neutralisation since neutralisation reactions make a salt and water as the only products, and this reaction makes carbon dioxide as well although the acid is neutralised! The chemical equation only shows the overall effect of these many small steps. This is because calcium carbonate is slightly alkaline, mean … ing when the two react, they cancel each other out; they neutralise each other. Hydrogen chloride itself is obtained as follows: hydrogen is burnt in chlorine, thus making synthetic acid. The reaction between these two compounds requires two parts hydrochloric acid to one part calcium chloride.
The main variables that can change a rate of reaction are; 1. We did not choose surface area as cutting the calcium carbonate tablets was difficult as the tablets often crumbled once cut. The factor that I will investigate is concentration. Please can you correct it for me : Ah right, i see. The surface area is measured of how much area is exposed. It has no effect on the energy of the particles.
James Watts - Navarre, Florida 1 If you have a question in mind which seems off topic, please Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. I think this will happen because when the acidity is higher the solution is stronger which then speeds up the reaction process. You need some carbonate, some scale from mum's kettle, bicarbonate of soda from the kitchen or some marble chips from the driveway. The reaction rate is how quickly a reaction occurs and this can be affected by four different factors: ¡¤ changing the surface area of any solids involved ¡¤ changing the concentration of reactants in solution ¡¤ changing the temperature at which it is carried out ¡¤ the use of a catalyst I am going to investigate into exactly how one of these variables affects the reaction rate and I believe the most suitable variable to change is the concentration of the solution as all necessary equipment is available within the school chemistry lab, and five results can be obtained easily and within the time allowance. I could get results for this experiments by recording a number of things, I could record: · The amount of time it takes for the calcium carbonate to dissolve.