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Chemistry 161 Lab 5 Scoring sheet Assessed item Abstract – should be placed at front of report, wordprocessed, correct format, contains relevant info Parts 1 through 4 – was your lab notebook prepared on the first day of this lab? Part 1 – Purpose statement Points possible 6 4 1 Part 1 – Balanced redox reaction 1 Part 2 – List of chemicals 1 Part 2 – List of equipment 1 Part 3 – Blanks filled in 1 Part 4 – Concentration of permanganate recorded 1 Part 4 – Setup of data tables, including column headings and units Part 5 – Details of the calculation of molarity of hydrogen peroxide for one run, and mean Part 5 – Conversion of concentration to percent by mass of hydrogen peroxide Part 6 – Mean and standard deviation of molarities of peroxide for the class, sig figs (both days) Part 6 – Comment on outliers (both days) 2 Part 7 – Question 1 1 Part 7 – Question 2 1 Part 8 – comparison of team peroxide concentration versus class peroxide concentraiton Part 8 – comment on how the endpoint of the titration was achieved, and modifications made Part 8 – comment on the source of the error on the first day, and how it was corrected on the second Part 8 – statement of confidence in technique of titration for determining concentrations TOTAL 2 1 1 1 1 1 2 1 30 Points earned
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