Posted: February 26th, 2023

chemistry #7

due by 02/20/2023 Monday

Module 7 Assignment: (Pages 354-356) Complete only the numbers listed below, and submit your answers here by Tuesday, 11:55PM

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Exercise Questions: 17,  27

· Problems: 29, 31, 33, 35, 37, 39, 41

· Feature Problems and Projects: 51

Module 7 Discussion, Chapter 13

This week’s topic is about acid and base. Watch the following video clip on antacids, which is quite interesting.

How do antacids work?

In the clip, several common types of antacids were mentioned. Select one antacid that interests you the most from the list below and answer the discussion questions.

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Alka-Seltzer

 – NaHCO3 and/or KHCO3

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https://en.wikipedia.org/wiki/Alka-Seltzer

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Brioschi

 – NaHCO3

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https://en.wikipedia.org/wiki/Brioschi_%28company%29

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Equate

 – Al(OH)3 and Mg(OH)2

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https://en.wikipedia.org/wiki/List_of_Walmart_brands#Others

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Maalox (liquid) – Al(OH)3 and Mg(OH)2

· Maalox (tablet) – CaCO3

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https://en.wikipedia.org/wiki/Maalox

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Pepto-Bismol.

 – C7H5BiO4

· Pepto-Bismol Children’s – CaCO3

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https://en.wikipedia.org/wiki/Bismuth_subsalicylate

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Rolaids

 – CaCO3 and Mg(OH)2

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https://en.wikipedia.org/wiki/Rolaids

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Tums – 
CaCO3

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https://en.wikipedia.org/wiki/Tums

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Mylanta – contains Al(OH)3

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https://en.wikipedia.org/wiki/Mylanta

(Referenced from wikipedia topic “Antacid.”)

https://en.wikipedia.org/wiki/Antacid

1. Write out the chemical name of the compound you selected. For example, NaOH = sodium hydroxide. (Note: the example is not an antacid…it’s a very strong base.)

2. Is the compound (antacid) you selected an ionic compound or a covalent compound? For example, NaOH is an ionic compound.

3. The video mentioned some side-effects associated with each of those compounds. Do some further research and list the risks vs. benefit of the antacid you selected.

4. Write out the chemical reaction that will take place in your stomach if you take the antacid, assuming the acid in your stomach is hydrochloric acid, or HCl.

For example, the react of NaOH and HCl would be as follow.
NaOH + HCl –> H2O + NaCl

If we have a strong base reacting with a strong acid, we will end up with water and salt (in this case, the resulting “salt” is NaCl, just like the salt in your salt shaker).

Hope you all have fun learning about chemistry in our everyday life!