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. If I was to compare this practical with my last experiment on gelatin I would be majorly impressed. We took all of our measurements in the summer, and every day we measured the room temperature to make sure that there was no major difference between days.
In fact, the only thing that could have been improved would be how quickly I fastened the bung and started the timer but this was very hard there was a lot to do in that very short time span. During the execution of my practical I was very accurate with my measurements and tidy with my work space.
Of course, our results did obtain several outliers, all of which were removed from our final table, and were omitted in working out the means and ranges. However, using a gas syringe would have greatly improved the reliability of the results more than mm3.
We also wore goggles whilst the experiment was taking place in case any of the solution may have managed to shoot into our eyes. In some reactions, only the particles with high energy can react.
Out of the three possible methods, I believe that we chose the most precise one which gave the most accurate results.
There were certain control variables which we had to make sure did not affect our results. We also repeated every experiment 5 times to identify outliers and eventually give a mean and ranges.
Evaluation I believe that the data we obtained from our experiments was as reliable as possible. Control Variables Amount of acid 10ml each time Measuring Cylinder Concentration of acid 1 molar acid Measured by third party.
I used the scales and measured the Calcium Carbonate to the exact same 0. This is as it takes less energy petrol to get there as well as far less time than compared to taking the smaller roads.
The amount of carbon dioxide in the gas syringe is read off every 10 seconds until the reaction stops or the gas syringe runs out of capacity ml.
I predict that the reaction will occur as shown below: More essays like this: Weighed using digital scales. That is the main difference I would have made to our method, as the majority of the method was acceptable.
Our preliminary experiments showed us that method 1 was the best possible method as we found many problems with the other methods. Temperature affects the rate of reaction as explained in Collision theory.
As for the difference between concentrations, there is definitely a strong affect as the lowest concentration averages 7. As for why the higher the concentration the quicker 50cm3 Carbon Dioxide is produced, I believe this is because Carbon Dioxide is produced in the reaction, and a higher concentration a faster rate of reaction.
If the particles collide fast enough and in the right direction, sufficient energy to break these bonds will be produced the activation energywhich will allow the reaction to take place. This would therefore mean that the larger the surface area of the marble chips, the more collisions there would be, which a higher rate of reaction is.
A fixed amount of energy, known as the activation energy, must be reached for new products to be made, and the old bonds need to be broken. 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.
This is, as they do not have the sufficient kinetic energy for them in order to stretch or beak the bonds in order to form the products. Conclusion The rate of reaction graph has a positive correlation between the rate of reaction and the concentration; however the line of best fit is not linear but curved.
Temperature affects the rate of reaction as explained in Collision theory. The marble chips are then measured out I will be using 2g of marble chips each time and the hydrochloric acid 10ml is added to the flask. I will be changing the size of the marble chips to see which size reacts the fastest.
Method 2 had too large a scope for human error, due to the majority of the experiment relying on human judgement. The result is a solid fatty product, which is margarine. The conclusion I have reached is what I predicted before the experiments had taken place. Checking if the ranges overlap is commonly regarded as the best method to see if there is a real difference in the results.
The other main control variable was human error, which we could control by taking our time, not hurrying and staying focused during our experiment. Whilst the ranges did not overlap, showing a real difference in the assorted solutions, I would have preferred to have had smaller ranges, meaning more accurate results.
The higher the concentration of the acid the faster the rate of reaction will be. These outliers were probably caused by human error, as few other variables could have affected the experiment.
For both variables I recorded the time it took for 50cm3 of carbon dioxide gas to be produced. Additionally catalysts was not the variable I chose, because this would only give me two results — whether the rate of reaction is faster with the catalyst or whether it is faster without the catalyst.
When hydrochloric acid reacts with calcium carbonate the products are calcium chloride, water, and carbon dioxide. The formula for this reaction is: Hydrochloric acid + Calcium carbonate Calcium chloride + Water + Carbon dioxide HCl(aq) + CaCO3(s) CaCl2(aq) + H2O(l) CO2 As you can see above, in the reaction, the reactants are hydrochloric acid and calcium carbonate, and the products are.
Aim: To investigate the rate of reaction between Calcium Carbonate and Hydrochloric Acid. Just from looking at the aim of the investigation I already know that a salt would be formed because a carbonate with an acid forms a salt. Research Question: How does temperature affect the rate of chemical reaction between Calcium Carbonate and Hydrochloric Acid?
Hypothesis: If temperature increases then the rate of reaction between the reactants will increase because the molecules will gain more kinetic energy and make it ea. An Investigation Into the Factors Affecting the Rate of the Reaction Between Calcium Carbonate and Hydrochloric Acid Essay Investigation into the Factors Affecting the Rate of the Reaction between Calcium Carbonate and Hydrochloric Acid A chemical reaction is the process by which atoms or groups of atoms are redistributed, resulting in a.
Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Essay - Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Plan: In my experiment I will measure the rate of reaction between calcium carbonate and hydrochloric acid. The rate of the reaction is the speed that the reaction takes place so by measuring the rate I will.
Accuracy & Methods of Improvement Although it was generally an accurate and fair experiment there were bound to be some inaccuracies and errors.Carbonate and hydrochloric acid essay