Thermochemistry- Exothermic Heat of Solution

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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