What is the Rate of Reaction and What Influences it?
This post will introduce the rate of reactions and also factors that influence the rate of reaction for Prelim Chemistry.
Topic: Rates of Reaction
- Conduct a practical investigation, using appropriate tools (including digital technologies), to collect data, analyse and report on how the rate of a chemical reaction can be affected by a range of factors, including but not limited to:
- Surface area of reactant(s)
- Concentration of reactant(s)
Rate of Reaction
The rate of reaction is the speed of a reaction. Here are some factors that impact the reaction rate:
- Temperature -> increasing temperature increases energy which increases number of collisions with sufficient energy
- Surface area -> increasing surface area of reactant enables more reactant-reactant interactions
- e.g. Think of dyeing fabric, a massive piece of fabric versus cut up tinier pieces of fabric, which one will dye faster?
- Concentration -> increasing concentration increases likelihood of collisions
- Catalysts -> catalysts lower activation energy which increases the number of successful collisions
This video will go through the factors in a little more depth.
This video also goes through the rate of reactions which may enhance your understanding.