Calorimetry - Combustion

Question 1

How can you measure the amount of energy produced when a fuel is burnt?

Answer 1

Simply burn the fuel and use the flame to heat up some water

Question 2

What does this method use and why?

Answer 2

A metal container made of copper because it conducts heat so well

Question 3

What is really important to make sure?

Answer 3

As much heat as possible goes into heating up the water

Question 4

Reducing draughts is the key here - what can you use to act as a draught excluder?

Answer 4

A screen

Question 5

1) What do you put in water and record?

Answer 5

50g in the copper can - its temp

Question 6

2) What do you weigh?

Answer 6

The spirit burner and lid

Question 7

3) what do you do third?

Answer 7

Put the spirit burner underneath the can, and light the wick

Question 8

4) how long do you heat and constantly stir the water til?

Answer 8

The temp reaches 50°C

Question 9

5) what do you do fourth?

Answer 9

Put out the flame using the burner lid and the measure the final temp of water

Question 10

6) what do you weigh after the experiment?

Answer 10

The spirit burner and lid again

Question 11

What can you use the measurements you’re taken for?

Answer 11

To calculate the Enthalpy change