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What affects the rate if reaction more, increasing concentration or increasing temperature?

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What affects the rate if reaction more, increasing concentration or increasing temperature? Concentration Experiment: Plan: Try to get the rate of reaction to increase while increasing the amount of concentration. I will use hydrochloric acid and calcium carbonate in my experiment. I will simply have about 250 mm of hydrochloric acid in a clonical flask and add magnesium about 3 grams and I will work it up to be about 6 grams. I will use the same amount of CaCo3 acid but increase the HCL. I will time how long it takes for the magnesium to stop reacting and then stop the timer and record and do this several times while increasing the concentration. Materials: * Conical Flask * Three unit scale (grams) * Calcium Carbonate * Hydrochloric acid * Timer * Measuring cylinder Method: 1. Gather materials 2. Get measuring cylinder and measure up to 250 mm of hydrochloric acid 3. Get amount needed for CaCo3 4. Get timer 5. Add calcium carbonate to hydrochloric acid and start the timer 6. Wait till CaCo3 stops reacting and stop timer 7. Record data and repeat process until the amount needed for CaCo3 is done Time (seconds) Volume (mm3) ...read more.


I think it was a very good exercise to practice us for the future when we will have to do everything on our own. There were so many complications though. When I came I didn`t have the proper equipment which was really inconvenient because my time was running low trying to find something that replace the already taken objects. I also messed up a couple of times either putting in too much acid or putting too much CaCo3. Conclusion: My end results show that the concentration defiantly affected the rate of reaction. Each time I increased the concentration the reaction was speeded up and made the volume increase drastically. The concentration also affected the time it took for it to reach maximum volume. For example, for the 1 molar acid it didn`t start up until it reached one minute! For 1.5 molar it started automatically and increased the speed of the reaction over time. . Temperature Experiment: Plan: Try to get the rate of reaction to increase while increasing the temperature. I will use hydrochloric acid and CaCo3 in my experiment. ...read more.


For the 50*C table the reaction started right up and sky rocked from there. For the second table for room temperature 27.8*C it look more time then when it was heated. But, the reaction stayed steady and continued to climb up to the volume limit (100). Evaluation: For this experiment I had to get my results from my classmate Ben because I didn`t have enough time to do concentration and temperature in the space of 2 days. So, if I would have had to do this again then I would`ve asked for more to plan and to make sure that I had more results to make it a more interesting lab, and to try out more things. Conclusion: Over all, I think that the temperature defiantly affects the rate of reaction more because it makes the molecules move a lot faster which triggers the reaction to speed up. For the concentration it did make quite a difference but not the way the temperature affected it. When it was heated then it would go much faster and changing the concentration only make it go faster by not as much as the temperature. Thank you I really enjoyed this experiment THANK YOU! :) BY: VALERIE BERGERON ?? ?? ?? ?? ...read more.

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