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Concentration Of Acid And Reaction Time Lab Report

1417 Words6 Pages

Concentration of acid and reaction time

Aim
In this experiment, I’m going to find out the relationship between concentration (mole) of acid and carbonate’s reaction.

Hypothesis
If the concentration of acid is stronger, then the film canister will pop (react) faster. Because the concentration of Sodium carbonate is always same in my experiment, so the factor that changes the volume of carbon dioxide is concentration of Hydrochloric acid. If the concentration gets bigger, the proportion of acid gets bigger, which means there are more particles (molecule) that will bond with other particles (molecule). For this experiment, the proportion to get a CO2 is 2HCl+Na2CO3 = CO2.., which is 2+ Na2CO3 : 1. So as the mole of hydrochloric acid is bigger, …show more content…

In beaker put 10ml of 2mole Hydrochloric acid, which is measured by beaker. In beaker from step 17, put 10 ml of distilled water, which is measured by cylinder. With the glass rod stir beaker in step 18. Repeat step 4 to 9. Repeat step 17 to 20 for 5 times. In beaker put 5ml of 2mole Hydrochloric acid, which is measured by beaker. In beaker from step 21, put 15ml of distilled water, which is measured by cylinder. With the glass rod stir beaker in step 22. Repeat stet 4 to 9. Repeat step 21 to 24 for 5 times.

Diagram

Results

In different concentration of HCL, the time it took to react

Concentration of HCl (Mol) Time it takes to react (pop) (s) Average (Time) (s) Trial 1 Trial 2 Trial 3 Trial 4 Trial 5
0.5 48.05 97.72 156.07 126.94 52.74 96.30
1.0 15.54 8.64 9.92 44.17 2.85 16.22
1.5 6.92 5.67 3.95 31.10 30.06 15.54
2.0 6.17 11.04 6.30 5.16 18.95 9.524

To calculate the average (Time) (s) (Sum of all trial in one mole)/5
= (48.05+97.72+156.07+126.94+52.74)/5 = 481.97/5 = 96.304 (4sigfig)
= 96.30s I have calculated the average of the time it took to react with my hands …show more content…

When I was doing experiment, the factors that can change my result was controlled same. The factored that were controlled equally were volume of the acid, layers of paper, type of carbonate, and etc. However, the part that can be improved is the film canister. When I close the lid with paper between lid and body, the solidity that the lid is closed is different by the force that is applied to lid. Though I have closed until the surface of lid was even but as in different trials, some could be tightly closed or loosely closed. Also when I compared to other experiment, my result is similar with other results. My results are reliable. I have done 5 trials by each independent variable. By making the average of each independent variable, my result is more reliable. Not only that, the range of the independent variable is suitable. I’m trying to compare the reacting time of the in difference of Hydrochloric acid’s concentration. The range of the independent variable was 0.5M, 1.0M, 1.5M, and 2.0M. The different between the biggest concentration and smallest concentration is 1.5M, which is quite large. To know the relationship between times takes to react and concentration of acid, the difference 1.5M is appropriate to compare in different concentration. That much difference was able to notice the significant difference in results, which was 96.30 and

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