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Experiment to measure the Specific Heat Capacity of Water
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Experiment to measure the Specific Heat Capacity of Water Diagram Method * Apparatus was set up as shown in the diagram. * DC power supply was turned to 12 volts. * The calorimeter was weighed with and without water, the results were subtracted to give the water mass. * Initial water temperature was recorded. * The current was measured in the ammeter and recorded. * Water was left to heat for 10 minutes. * The final water temperature was recorded. Results and Calculations Voltage, (V) 12 V Current, (A) 1.3 A Time, (S) 600 s Energy, (J) (VxTxI) 9360 J Mass of water, (Kg) 0.159 Kg Shc, (c= Q m 7358.5 kJ/kg/ºC Conclusion We experimentally calculated the shc of water to be 7358.5 kJ/Kg/ºC. Compared to the theoretical value of the specific heat capacity of 4180 kJ/ºC, our results were considerably higher. Evaluation The results showed a considerable amount of inaccuracies. These were: * The amount of water in the calorimeter could have affected the results by being measured imprecisely and not accurately calculated. * The...
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