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Class data for this experiment can be downloaded from a Blackboard file in which

ID: 1030242 • Letter: C

Question

Class data for this experiment can be downloaded from a Blackboard file in which each student will have entered the molarity of their NaOH solution and data on their two antacid trials. Tests were done on 2 different brands of antacids. The goal of this part of the report is to use Excel to find the equivalent moles of base /R tablet for each meanurement made in the class, and then to determine the average value for both antacid samples.Directions for the calculations are siven in the lab manual Class average results:Submit the results of your calculations of average values for the antacids with this report. In addition, note any data points that were discarded in the averaging of the antacid data. Class averag Antacid masses: 0.537970588 g NaOH added: 22.65 mL MofNaOH: 0 107 M Cost Rolaids: $0.0221/g Tums: $0.0569/ of antacid per gram Antacid evaluation: Fill in the chart below using calculated data for equtvalent mol base Ig antac id and for the cost/g antacid Tums Rolaids Equivalent mole base/g antacid Antacid cost/equivalent mol base Compare the two antacids: Which has more neutralizing power per gram (that is, which contains more equivalent base per gram)? Which is a better buy (lower cost per mole of base)? Relative Error Analysis: Compare your results for the antacid to the class values by calculating the relative error. Antacid used Relative error Comment on your relative errors. Are your values high or low, relative to the class averages? Are your values within 1% or 5% or 10% ofthe class values? Are they more than 10% from the class averages?

Explanation / Answer

roloids had more equivalent baseper gram = 10.75*10-6 /gm and tums has 7.265 * 10-6 /gm

naturally tums is cheaper and a better buy since it has less equivalent base per gm.