Measurement of Heat Flow & Enthalpy Change

A calorimeter is a device used to measure the quantity of heat flow in a chemical reaction. Two of the most common types of calorimeters are...

Laws of Thermochemistry

Understanding Enthalpy and Thermochemical Equations Thermochemical equations are just like other balanced equations except they also specif...

Thermochemistry Table for Common Compounds

The molar heat of formation of a compound (ΔH f ) is equal to its enthalpy change (ΔH) when one mole of compound is formed at 25°C and 1 atm...

Cations and Anions in Aqueous Solution

These are molar heats of formation for anions and cations in aqueous solution. In all cases, the heats of formation are given in kJ/mol at 2...

Endothermic Reaction Demonstration

An endothermic process or reaction absorbs energy in the form of heat (endergonic processes or reactions absorb energy, not necessarily as h...

Hot Ice or Sodium Acetate

Sodium acetate or hot ice is an amazing chemical you can prepare yourself from baking soda and vinegar. You can cool a solution of sodium a...

Create an Exothermic Chemical Reaction

Exothermic chemical reactions produce heat. In this reaction vinegar is used to remove the protective coating from steel wool, allowing it ...

Endothermic and Exothermic Reactions

Many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions. Exothermic reactions may occur ...