Rates of Reaction 0.0 / 5 ? ChemistryRate of reactionGCSEAQA Created by: chanthi_xCreated on: 14-12-15 18:18 What are the formulas for rate of reaction? Rate of reaction=amount of reactant used/time Rate of reaction=amount of product formed/time 1 of 9 What factors affect the rate of a reaction? Concentration, temperature, surface area, pressure, catalyst 2 of 9 What do particles need to do for reactions to occur? The particles must collide with the correct activation energy and orientation. 3 of 9 What happens when the temperature increases? The speed of the reacting particles increases so that they collide more frequently and energetically. 4 of 9 What happens when the pressure of reacting gases increases? The frequency of collisions and rate of reaction increases. 5 of 9 What happens when the concentration of reactants in solutions increases? The frequency of collisions and rate of reaction increases because there are more particles of the reactants moving around in the same volume. 6 of 9 What happens when the surface area of solid reactants increases? The frequency of collisions and rate of reaction increases. 7 of 9 What happens when catalysts are used? The catalyst provides an alternative reaction pathway with a lower activation energy so the rate of reaction increases. 8 of 9 Why are catalysts important? They are important in increasing the rates of chemical reactions used in industrial processes to reduce costs. 9 of 9
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