C8

Question 1

How is rate of reaction caculated?

Answer 1

Rate of reaction = amounof reactant used or product formed / time taken

Question 2

Describe measuring the rate by monitoring mass loss

Answer 2

Place the reaction flask on a balance. In these reactions a gas is given off, so record the decrease in mass

Question 3

Describe measuring the rate by monitoring the volume of a gas?

Answer 3

Connect a gas syringe to a reaction flask and measure the volume of a gas formed in time intervals

Question 4

Describe measuring the rate by monitoring the disappearance of a cross?

Answer 4

Take a piece of paper and mark a cross on it, put the reacrion flask on this cross, mix the reagents, and measure how long it takes for a cloudy mixture to cover the cross

Question 5

State 5 factors affecting the rate of a chemical reaction?

Answer 5

Concentration
Pressure
Surface area
Temperature
Catalysts

Question 6

What is the collision theory?

Answer 6

Chemical reactions can occur only when reacting particles collide with each other with sufficient energy

Question 7

Describe and explain the effect of increasing temperature on the rate of reaction?

Answer 7

As temp increases the react