3.1 Stomachs produce gastric acid to aid in digestion. This acid is mainly com-

Question

3.1 Stomachs produce gastric acid to aid in digestion. This acid is mainly com- posed of hydrochloric acid that is secreted by cells of the stomach lining called parietal cells. Excessive secretion of this acid is common and can lead to many stomach problems such as gastritis, gastric ulcers, and peptic acid disease. These disorders are treated with antacid tablets, which contain weak bases that can help neutralize acids. A common antacid tablet contains the weak base magnesium hydroxide, Mg(OH)2. The neutralization reaction for stomach hydrochloric acid (HCl) is: Mg(OH)2 + 2 HCI- MgCl2 + 2 H2O Characterize the continuous acid neutralizing process in the stomach using definitions from Chapter 2 (e.g., open or closed, steady-state or dynamic, reacting or nonreacting). For what species or elements can you write conservation equations? For what species must you write accounting statements?

Explanation / Answer

For the equation - - Mg(OH)2 +HCl=MgCl2 +HOH{WATER}

1. Milk of magnesia or in any other form of antacid magnesium hydroxide will neutralise the excess hydrochloric acid in our stomach by producing water and and thereby removing it by excretion.
2Magnesium Hydroxide is Mg(OH)2 and Hydrochloric Acid is HCl.This is an neutralization Reaction. Magnesium Chloride Salt and Water is formed.
3.Antacids work by counteracting (neutralising) the acid in your stomach. They do this because the chemicals in antacids are bases (alkalis) which are the opposite of acids.
4.pancreas naturally produces sodium bicarbonate to protect your intestines. As an absorbable antacid, sodium bicarbonate quickly neutralizes stomach acid and temporarily relieves symptoms of acid reflux. (genreally this helps the body).
5. Antacids buffer gastric acid raising the pH to reduce the acidity. They are bases with pH above 7.5.

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