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Mr. Gregory White
Mr. Gregory White, Professor
Category: Homework
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Experience:  M.A., M.S. Education / Educational Administration
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Indigestion and Titration: An Acid-Base Titration. As a Lead

Customer Question

Indigestion and Titration: An Acid-Base Titration. As a Lead Analytical Chemist I have to test 5 antacids with a back-titration that works. The following is provided: Each antacid is mixed with:
40 mL of 0.1 M HCl so to see how much extra help each antacid pill needs to neutralize 40mL of 0.1 M HCL, I add 0.05 M NaOH drop by drop to back titrate the solution until the pH is neutral. The results are: Maalox/ Tums/ Mylanta/ CVS Brand/ Rennies
Mass of one 20.0g 21.0g 18.0g 18.3g 17.5g
dose Antacid mL NaOH 24.1mL 22.4mL 20.0mL 19.9mL 24.4mL
used in back titration
1. Which is the strongest antacid on a single dose basis? Which is the weakest? Explain and show calculations.
2. Which are the strongest and weakest on a by-weight (mass) basis? Explain and show calculations.
3. What might you use in the above experiment to get a color change to happen in the solution? At what pH would the solution have been neutral?
4. If you only had 0.1 M sulfuric acid available to run
Submitted: 1 year ago.
Category: Homework
Expert:  Mr. Gregory White replied 1 year ago.

Hello, my name is Greg.

I see this might be time sensitive.

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Customer: replied 1 year ago.
I need the answer.
Expert:  Mr. Gregory White replied 1 year ago.
THIS ANSWER IS LOCKED!

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I no longer need this answer. Please refund my money. Thank you