of 0.1 CONCLUSIONs (10 PTS.) 1. (3) In 1-2 sentences, summarize your most import
ID: 938738 • Letter: O
Question
of 0.1 CONCLUSIONs (10 PTS.) 1. (3) In 1-2 sentences, summarize your most import ant result and indicate how your findings fulfilled the your purpose of the experiment. In the conclusion, you should report only your one major result from analysis. Do not report the result of each sub-step. Inthis explrtmnt ue trail 's ansl came up od error, to ke =-0.07941, (3) comment on the accuracy of your results in this experiment using the % error as a guide. Also comment on the precision of your data, what was the % error? what does that value indicate about the accuracy of your data? How precise were the values that you obtained? 2. (4) Suggest at least two sources of error for your determination. Think about sources of error in the design of the experiment, the equipment that was used, or assumptions that were made. Human er acceptable source of error, n possible source 3. ror is not an or is saying "I didn't do the graphs or calculations right." If you mention a of error, then it should be something that actually happened during your analysis.Explanation / Answer
2. Accuracy is reported in terms of percentage error. In trail - 1, the measurement is accurate upto 100 - 0.0196 = 99.98%. Similarly for trail-2, percentage accuracy = 99.85 %
For trail-3, percentage accuracy = 99.92%
Precision is reported using percent deviation from the average value. Hence
Precision = [(Measured value - average value) / average value] x 100
3. A negative percentage error indicates that the experimental amount of the chloride is less than the calculated amount i.e there is a decrease in the weight percentage. The reason behind this could be the following errors.
(i) The precipitation reaction of chloride might be incomplete due to less availability of the precipitating agent or due to low temperature.
(ii) Not completely collecting the precipitate.
(iii) The sample might be weighed incorrectly recording a higher mass value.
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