: DETERMINING THE HEAT OF REACTION
: MOHAMAD ZAHIDAN BIN MD NOR
KHAIRUNNISA BINTI RADUAN
MOHAMAD ZUHAIRI BIN TAJUDIN
MURSHIDAH BINTI MOHD RAZALI
: UniKL - FiST RCMP
1. To determine the heat capacity of a calorimeter.
2. To determine the heat of neutralisation of HCL and NaOH. THEORY
* Heat released by the chemical reaction -qrxn = qs +qc , Where qs = heat absorbed by solution
qc = heat absorbed by calorimeter
MATERIAL AND APPARATUS
* 1.0 M Hydrochloric Acid, 1.0 M Sodium Hydroxide, Stopwatch, Thermometer, Beaker (100 ml), calorimeter, measuring cylinder (100 ml). PROCEDURE
(A) Determination of the heat capacity of a calorimeter.
1. The temperature, T1 of an empty calorimeter is measured. 2. 50 ml of distilled water is poured into a 100 ml beaker. 3. The beaker is heated to a temperature between 50-60 0C. 4. The hot water is poured into the calorimeter.The initial temperature of hot water, T2 is measured immediately. 5. The decrease in temperature is observed until it remains constant for 1 minute. (B) Determination of the heat of neutralization of 1.0 M HCL and 1.0 M NaOH. 1. 25 ml of 1.0 M of NaOH solution is placed into the calorimeter and 25 ml of 1.0 M HCL solution is placed into a beaker. The initial temperature of each solution is recorded. 2. Without removing the thermometer, the lid is lifted slightly and HCL solution is poured quickly into the calorimeter. 3. The lid of calorimeter is replaced quickly. 4. The solution is stirred and the temperature is recorded every 15 seconds for at least 2 minutes. Note the maximum temperature reached. 5. The experiment is repeated.
6. The heat of...
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