AIM: To determine the specific heat capacity of an inte ming
alorimeter method.
APPARATUS: Unlagged calorimeter, draught shield, rubber from
thermometer to 100°C), stopwatch or eleck, balance reading to the
In water bath for beating rubber bang to the boiling point of water
USEFUL CONSTANTS: Specific heat capacity of
BUNGI
klaterial
Aluminum
hat
0.372 x 10k
-0.886x 10Jk'k
Water
METHOD: Heat the rubber bung, tied to a thread in boiling water for
5-10 mins. Weigh the calorimeter empty and again when about 2/3 full of
ater and record the mean temperature of the water over 3-5 minutes
Bring the calorimeter close to the water bath, quickly transfer the heated
bung into the calorimeter; and simultaneously start the stop watch, see
T 4.1. Record the temperature of the water at 1/2 minutes intervals.
stirring the water continuously and gently with the thermometer.
Continue the recording of the temperature until it reaches a maximum
and then falls by about 2-5°C. Weigh the calorimeter, water and bung
Strive
Caloreser
-0.39 x 10kg
-4.2 x 10kg k
Shiell
Pig 4.1: Measurement of Specific Heat Capacity
