Chemistry Mini Project 3

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SC155 – Mini-Project #3

Please remember to show all your work for the calculations in questions 1 and 2. These can be added at the end of this document (see Calculations Section). Complete the yellow shaded regions in the document below.

Question #1

AntacidVolume NaOH used in back-titration (mL)Volume NaOH used in back-titration (L)Moles NaOH used in back-titration Maalox24.1 mL1.205.001205
Tums22.4 mL1.00.00112
Mylanta20.0 mL0.995.001
CVS19.9 mL1.220.0009995
Rennies24.4 mL1.120.00122

Based on the values you calculated above, which antacid is the strongest / weakest on a single-dose basis? Please explain.

Question #2

AntacidMoles base in one doseMass of one doseMoles/gram for one dose Maalox24.120.0 g.00013975
Tums22.421.0 g.0001371
Mylanta20.018.0 g.0001666
CVS19.918.3 g.0001642
Rennies24.417.5 g.001588

Based on the values you calculated above, which antacid is the strongest / weakest on a by-weight (mass) basis? Please explain.

Question #3

What might you have used in the above experiment in order to see a visible color change in the solution? At what pH would the solution have been neutral?

Question #4

If you had walked into the lab, only to discover that you only had 0.1 M sulfuric acid available to run you tests, how might this have affected your calculations? Why?

Question #5

Balance the following reaction.

Al(OH)3 + HCl  AlCl3 + H2O

Question #6

FDA major findings report and summary.

Calculations Section

Please show calculations for questions #1 and #2 here.

#1 –
Maalox: 0.05 mol/L*24.1 mL= 1.205 mmol/1000=.001205 mol
Tums:0.05 mol/L*22.4 mL= 1.120 mmol/1000-.00112 mol
Mylanta: 0.05 mol/L*20.0 mL=...
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