Openchemistry/Thermochemistry

Reaction Profiles

Exothermic

Endothermic

Products - Reactants

Enthalpy calculations

Working out the enthalpy of reaction

Rates of reaction

"More frequent effective collisions "

For a reaction to occur the particles need to collide with enough energy and the right orientation.  If both of these conditions are meet then we have a successful collision. The energy at the start of a reaction is to get over the activation energy.

Key points

Four things affect the rate of reaction: Temperature Concentration Surface area Catalyst