Chemistry Project

Topics: Acid, Hydrochloric acid, Gastric acid Pages: 7 (1611 words) Published: October 25, 2012
. AIM :.
To Determine which Antacid
could Neutralize the most
Stomach Acid.

(Chemistry Project)

Project Prepared By:
Roll no.
INDEX page no.
 Objective 3  Introduction 3  Acids 4  Stomach Acid 5  Some foods containing acids 5

 Antacid 5  Action mechanism 5  Indication 6  Side Effects 6  Problems with reduced stomach acidity 6

 Experiment Design 7  Material Required 7  Procedure 7  Observation And Calculation 8

 Result 9  Precautions 10  Bibliography 10


The purpose of this experiment was to determine which antacid could neutralize the most stomach acid.
I became interested in this idea when I saw some experiments on medicines and wanted to find out some scientific facts about medicines. The information gained from this experiment will help people know which antacid they should look for in the stores. It will also let them know which antacid will give them the most comfort. This could also save consumers money and provide better health.


Digestion in the stomach results from the action of gastric fluid, which includes secretions of digestive enzymes, mucous, and hydrochloric acid. The acidic environment of the stomach makes it possible for inactive forms of digestive enzymes to be converted into active forms (i.e. pepsinogen into pepsin), and acid is also needed to dissolve minerals and kill bacteria that may enter the stomach along with food. However, excessive acid production (hyperacidity) results in the unpleasant symptoms of heartburn and may contribute to ulcer formation in the stomach lining. Antacids are weak bases (most commonly bicarbonates, hydroxides, and carbonates) that neutralize excess stomach acid and thus alleviate symptoms of heartburn. The general neutralization reaction is:

Antacid (weak base) + HCl (stomach acid) —› salts + H2O + CO2

The hydrochloric acid solution used in this experiment (0.1 M) approximates the acid conditions of the human stomach, which is typically 0.4 to 0.5% HCl by mass (pH ~ 1).Antacids help people who have or get heartburn. The following information will help people understand how stomach acid works and what antacid will help those most.


Acids are a group of chemicals, usually in liquid form. They can be recognized by their sour taste and their ability to react with other substances. Acids are confirmed as an acid by their pH. The pH of acids ranges from 0-6.9 (below 7). The two main acids are: mineral acid and organic acid. The three well known acids that are sulphuric acid (H2SO4), nitric acid (HNO3), and hydrochloric acid (HCl).


Stomach acid is very dangerous. If a person was to have an ulcer and the stomach acid was to escape it would irritate their other organs. Stomach acid is highly acidic and has a pH of 1.6. Stomach acid is hydrochloric acid produced by the stomach. If there is too much stomach acid it can cause heartburn. Heartburn is when stomach acid is produced in abnormal amounts or location. One of the symptoms of heartburn is a burning feeling in the chest or abdomen.

Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • chemistry Essay
  • Back titration Essay
  • Chemistry Project Essay
  • Chemistry Projects Essay
  • Chemistry Essay
  • Chemistry Essay
  • history of chemistry Essay
  • Essay on chemistry report

Become a StudyMode Member

Sign Up - It's Free