Chemistry coursework rate of reaction hydrochloric acid and marble chips
Marble chips and hydrochloric acid experiment write up
Surface area In my investigation I will be testing how changing the concentration of the Hydrochloric acid This is why I think my observation and measurements were good. The lower the concentration the less chance of colliding with a marble chip particle, hence the slower rate of reaction. Save View my saved documents Submit similar document. The only way of explaining this trend is by using the Collision theory. For this reason, generally speaking, and in the absence of catalysts or extra energy input, a low activation energy reaction is likely to be fast and a high activation energy reaction much slower, reflecting the trend that the lower the energy barrier to a reaction, the more molecules are likely to have sufficient energy to react on collision. As I repeated the experiment 3 times and worked out the average rate of reaction in each test, I think my results are quite reliable. Coursework Baccalaureate resources with teacher and student feedback. The higher the concentration means more collisions.
The volume of carbon dioxide was chosen before because we did a practice test and I had chosen 10cm cubed and this reacted very quickly, so I decided to use 30cm cubed, as it would take a bit longer.
BUT this is NOT the main reason for the increased reaction speed, so be careful in your theory explanations if investigating the effect of temperature, so read on after the pictures! As I repeated the experiment 3 times and worked out the average rate of reaction in each test, I think my results are quite reliable.
Factors Affecting Reaction Rate University resources with teacher and student feedback. Chemistry Using the syringe method I am going to investigate the reaction between Marble chips and hydrochloric acid by measuring the volume of carbon dioxide formed.
I intend to improve the accuracy of my results by doing the test three times and finding the average of these.
Marble chips and hydrochloric acid experiment results
I think that my method was suitable, as I had tested it before I did the real thing, and I did it twice before the real thing, which gave me plenty of time to make my method perfect, I didn't know if I wanted to use 5g of marble chips or 2g and this work before I had done helped me decide that 5g was a suitable amount for the actual experiment. Continue timing until no more gas appears to be given off. But to make them much more accurate I could of done one of the following things: Take more readings and then find the average Use marble powder because some chips have bigger surface area then others and could affect the results. The collision theory will be involved in this, for instance the more concentrated the acid we use, the faster the reaction will occur and the Other Popular Essays. I predict that when I increase the concentration, the rate of the reaction will increase. If the solutions is made more concentrated it means there are more particles of acid colliding with water molecules. You can see that the highest amount of concentration is 50 Cm3, which also has the quickest rate of reaction. Interpretation of figure 4: - From looking at the graph you can see trend. This reaction rate will tell me how fast or slow a chemical reaction is and there are four things that could Rate Of Reaction Between Hydrochloric Acid And Calcium Carbonate words - 11 pages Rate of reaction between Hydrochloric Acid and Calcium Carbonate Calcium carbonate reacts with hydrochloric acid to form carbon dioxide gas.
For this reason, generally speaking, and in the absence of catalysts or extra energy input, a low activation energy reaction is likely to be fast and a high activation energy reaction much slower, reflecting the trend that the lower the energy barrier to a reaction, the more molecules are likely to have sufficient energy to react on collision.
From this time I had been given to practice, I made sure before the real experiment that I had prepared everything properly so that on the day I wouldn't have to worry about things, if I was doing them correctly, and because of the previous experience I knew what to look out for aswell.
There are many variables that affect the rate of this reaction such as the following: 1.
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