Specific Heat Capacity. The specific heat capacity is the amount of energy required to increase the temperature of 1kg of a substance by 1˚C We will calculate.

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Presentation transcript:

Specific Heat Capacity

The specific heat capacity is the amount of energy required to increase the temperature of 1kg of a substance by 1˚C We will calculate the specific heat capacity of water by heating it with an electrical heater and measuring the energy required for a fixed temperature rise.

Instructions Heat 100ml of water using the immersion heater provided. Monitor the voltage and current of the heater using an ammeter and voltmeter. Make a note of the voltage across the heater and the current drawn. Record the time taken for the temperature to increase by 15˚C Calculate the Power of the heater using the formula Power = Voltage x current Calculate the total energy supplied to the heater using Energy = Power x time Calculate the Energy required to heat the water by 1˚C by dividing the total energy used by 15 Calculate the Energy required to heat 1kg (1000ml) of water by 1˚C by multiplying this value by 10. Voila! You have calculated the specific heat capacity of water!