Chemistry p2- the rate and extent of chemical changes

How to find the rate of reaction

Rate of reaction = Amount of reactant used/Time or Rate of reaction= Amount of product formed/Time

How can we find the rate of reaction?

Loss of mass ,the value of gas produced ,appearance of a coloured product

How to react

Particles must collide with enough energy the minimum amount of energy particles must have to react is called activation energy

What to do the slope of a graph drawn from experiment tell us about the rate of reaction

The steeper the slope, the faster of the reaction

How to measure the rate of reaction at a specific time

Calculate the gradient of a tangent to the curve

What does increasing temperature do?

It increases the speed of the particles so that they collide more frequently and more energetically. This increases the rate of reaction.

What does increasing the concentration of reactant and solutions do

It makes particles closer so it increases the frequency of collisions and so increases the rate of reaction

What does increasing the pressure of reacting gases to?

It makes particles closer together so it increases the frequency of collisions and so increases the rate of reaction

What does increasing the surface area of a solid reactant do?

Increases the frequency of collisions and so increases the rate of reaction

What do catalysts do in chemical reactions?

Catalyst to increase the rate of Chemical reactions, but are not used up during reaction. Different reactions need different catalyst. They are not included in the chemical equation for the reaction.

What do catalyst do to the rate of reaction?

Catalyst increase the rate of reaction by providing a different pathway for the reaction that has a low activation energy

Why are catalyst important in increasing the rate of chemical reactions?

Very important as they are used in industrial processes to reduce costs

What happened in reversible reactions?

In reversible reactions, the product of the reaction can react to produce original reactant

When is equilibrium reached?

Equilibrium is reached when the forward and reverse reactions occur at exactly the same rate

What does The relative amount of reactors a product that equilibrium depend on