Thermochemistry- Heat of Neutralization

Heat of Neutralization

Description: Equal quantities of six molar solutions of HCl & NaOH are mixed. The change in temperature is measured with a large read-out digital thermometer.

Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook  for Teachers of Chemistry

Year: 1983 Vol: 1 Page: 15

Keywords: HCl, NaOH, Digital thermometer, Neutralization

Ratings:

Hazard: Some

  • Inhalation hazard
  • Skin corrosion hazard
  • Corrosive to metals
  • Acute toxicity hazard
  • Aquatic toxicity hazard
  • Electric shock hazard

Effectiveness: Average

  • Secondary observations
  • Good connection from demo to course material
  • Time to results is low
  • High reliability

Difficulty: Medium

  • Simple procedures
  • Simple manipulations for most to perform
  • Demos in which remote display is required
  • Some intermediate steps to results

Safety Precautions:

  • Hot gloves required
  • Eye protection required
  • Lab coat recommended
  • Absorbent material on hand
  • Sodium bicarbonate on hand
  • UL approved three-prong plug and outlet
  • Chemically resistant surface  required
  • Perform in a well-ventilated area
  • Avoid inhalation of fumes or vapors
  • Prevent release of reagents to the environment

Class: Thermochemistry, Acids and Bases. Neutralization

Division: General