Determination of Neutralizing Capacity of Antacids
Description: Milk of Magnesia is added to water along with indicator to show that the solution is basic. The solution will turn yellow following the addition of hydrochloric acid but will turn blue when the mixture is stirred. The amount of acid needed to neutralize the antacid can be quantitated through titration or by measuring the amount added with graduated cylinders.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1989 Vol: 3 Page: 114
Keywords: Antacids, Titration, Household Chemicals, Indicators
Rating: 
Hazard: Some
- Electric shock hazard
- Mild inhalation hazard
- Eye irritation
- Corrosive to metals
Effectiveness: Average
- Results are observable with guidance
- Good connection from demo to course material
- Mild effects are seen by audience
- Secondary effects are observed by audience
Difficulty: Medium
- Procedures with some intermediate steps to results
- Some repetitive manipulations
- Time to results is high
- Volume dependent additions for proper results
- Experiments in which data is collected
- Some careful manipulations required
Safety Precautions:
- Gloves required
- Eye protection required
- Absorbent materials on hand
- Use of UL approved three-prong plug and outlet
- Perform in a well-ventilated area
Class: Acid-Base Reactions
Division: General
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