Exothermic Heat of Solution
Description: When sodium hydroxide pellets or concentrated sulfuric acid are added to water, the temperature rises. This can be shown on an air thermometer.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Exothermic, Sodium hydroxide, Sulfuric acid, Heat of dilution
Rating: 
Hazard: Medium
- Skin corrosion hazard
- Burn hazard
- Acute toxicity hazard – inhalation
- Serious eye damage hazard
- Corrosive to metals
- Electric shock hazard
Effectiveness: Average
- Good connection from demo to course material
- Secondary observations
- Results are hard to perceive without guidance
- High reliability
- Time to results is low
Difficulty: Medium
- Simple procedures
- Simple manipulations for most to perform
- Use of concentrated acids and bases
- Demos in which display or recording is necessary
Safety Precautions:
- Use of chemically resistant surface
- Eye protection required
- High temperature gloves required
- Lab coat recommended
- Perform in a well-ventilated area
- Sodium bicarbonate on hand
- Absorbent material on hand
- Use of UL approved three-prong plug or outlet
Class: Acid-Base Reaction, Thermochemistry
Division: General
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