Measurement of the specific latent heat of vaporisation of water

Label this diagram

a - steam

b - boiling water

c - steam trap

d - glass tubes

e - steam bubbles

f - calorimeter

g - cold water

h - insulation

i - thermometer

j - lid

Demonstrate the method of this experiment • 1

• Measure mass of calorimeter

• Add cold water

• Measure mass of calorimeter and water

• Calculate mass of water

Demonstrate the method of this experiment • 2

• Measure initial temperature

• Boil water until temperature rises by 40°C

• Measure final temperature

• Calculate temperature change

Demonstrate the method of this experiment • 3

• Measure mass of calorimeter and water and steam

• Calculate mass of steam

Define 2 precautions that are associated with this experiment • 1

Room temperature between initial water temperature and 100°C to cancel out errors

Define 2 precautions that are associated with this experiment • 2

Use steam trap to get rid of excess water

Write out the formula associated with this experiment

m (s) l (vw) + m(s) c(w) temp change (s) = m (w) c (w) temp change (w+c) + m (c) c (c) temp change (w + c)