mass of calorimeter water (mcw) gkg mass of calorimeter water ice (mcwice) gkg initial temperature of ice (ice) initial temperature of water (I) final temperature of water (F)
0 C C C
mass of water (mw) mass of ice (mice)
specific heat capacity of water (cw) specific heat capacity of copper (cc) specific latent heat of fusion (lf)
gkg gkg
4 180 J kg1 K1 390 J kg1 K1
J kg1
Use crushed ice, to ensure all of the ice is at 0 C. Dry the ice using blotting paper, to ensure no cold water is added to calorimeter. The melted ice would have already lost its specific latent heat.
Add the ice slowly, to avoid splashes. Use a digital thermometer as it is accurate to 0.1 C. Use a thermometer and stirrer with low specific heat capacity, as it is assumed that no heat is lost to the environment during this experiment.
Using more ice will cause a greater change in temperature and will reduce the percentage error. It will also reduce the percentage error in the reading of the mass of the ice.
SAMPLE PROBLEM 9D
8 g of ice, at a temperature of 0 C is placed in 90 g of water, with an initial temperature of 24.3 C. The water is in a copper calorimeter of mass 65 g; the specific heat capacity of copper is 390 J kg1 K1. The final temperature of the water is raised to 16.4 C after all the ice is fully melted. What is the specific heat of fusion of ice?
