Experiment At The Run Order Or Not

Data Tables and Observation: Fill out the data sheet (below) for the experiment and submit with this form. Recording data carefully

However, this is inconsistent with what we have been taught and with what is written in the textbook. Since the textbook is a more reliable source of information, I must conclude that the reason for this difference in results may be attributed to error on the part of the students conducting the experiment.

This test was used in order to determine if there were too many or too few runs in a series of data. After conducting the runs test it produced a z-value of -5.9123, which indicates the amount of standard errors of the identified number of runs below the expected number of runs. The p-value indicates how extreme the z value is and with a p-value (0.0001) which is less than .05 or .1 the null hypothesis of randomness is rejected (Figure 1).

I found out that both of my experiments were off by 0.46 and 0.13 but were remotely

    One possible source of error that can affect the results was that a mercury thermometer was used instead of an electronic one. The use of a mercury

There were three different runs in order to have comparable data and to increase the validity of the experiment. The first run gave 39% of Sodium Bicarbonate. The second run gave 34% of Sodium Bicarbonate while the third one gave 39%, which is the same as the first run. The average percentage was 37% which is much lower than the manufacturer's percentage of 59%. The percent error came out to be -37%.

that were not correct and correct them, giving the data from your experiment that supports the corrections.

Complete the experiment and save the PDF lab report. Do not answer the questions in the PDF lab report. Use the data in the PDF lab report

The control experiment for this investigation will be the experimental setup of 5 trials using 5oC as the temperature. All the steps in the method will be followed.

The next step in this lab is to rinse the Erlenmeyer flask with distilled water down the drain and then repeat the experiment, this time adding 10 ml of 0.10M KI and 10 ml of distilled water to the flask instead. The flask should again be swirling to allow the solution to succumb to the same temperature as the water bath and once it has reached the same temperature, 10 ml of 3% H2O2 must then be added and a stopper must be immediately placed on the flask and recording should then begin for experiment two. After recording the times, the Erlenmeyer flask must then be rinsed again with distilled water down the drain. After rinsing the flask, the last part of the lab can now be performed. Experiment three is performed the same way, but instead, 20 ml of 0.10 ml M KI and 5 ml of distilled water will be added and after the swirling of the flask, 5 ml of 3% H2O2 will be added. After the times have been recorded, data collection should now be complete.

The experiment is repeated twice and an average is obtained. This ensures the consistency of the measurement as the reading is triplicated, thus reducing anomalies. It can be seen that the reading obtained were around the same value. This proves that the results are reliable.

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The test tube labelled I was subjected to an ice bath for a minimum of 20 minutes. The test tube was positioned in a way that it won’t touch the ice, and the experiment test was conducted on top of the ice. The test tube labelled 37 was subjected to a 37°C water bath for a minimum of 10 minutes. The experiment test was performed while it was still in the water bath. Finally, the test tube labelled R was left in room temperature because it was the control for the experiment.

This experiment shall be repeated twice or more to enhance accuracy of the results obtained. Besides detecting systematic errors, this experiment would aid on the technique and understandings to the correct use of these equipments.

In this case, level of significance, α was not provided. Therefore, the analysis will be evaluated based on two α values which are: