Reaction Rates

Question 1

What is the rate of reaction?

Answer 1

How quickly a reaction happen and how long it takes for products to be made from reactants.

Question 2

How do you work out rate of reaction?

Answer 2

Rate of reaction:

Amount of reactant used or amount of product formed / time

Question 3

How do create an experiment to measure rate of reaction from precipitation ?

Answer 3

1) mix two see through solution this makes a cloudy precipitate
2) mix them and put a cross under a beaker
3) time how long it takes for the mark to be covered , the faster , the faster rate of reaction
4) the result is subjective as people have different opinions on when it disappears

Question 4

How do you measure rate of reaction using a change in mass?

Answer 4

1) measure the rate of reaction by gas given off
2) the lost mass is easily measured The quicker it drops (mass) the faster reaction
3) the reaction has finished when the reading on the balance stops changing
4) plot a graph of change in mass against time
5) this releases gases into the room - use rum cupboard

Question 5

How do measure rate of reaction using a volume of gas given off experiment?

Answer 5

1) Use a gas syringe
2) more gas from reaction given off will push the syringe back
3) measure after a certain time and record
4) plot of a graph with results