The heat of solution is found by adding a salt to water in a calorimeter and mea

Question

The heat of solution is found by adding a salt to water in a calorimeter and measuring the temperature change. The specific heat of water is 4.180 Joules per g per degree C. In the calculation of the heat of solution, ignore the contribution to specific heat and mass due to the salt. Assume that these contributions are negligible. The data collected are as follows: Calculate the following Change in water temperature ( degree C) The heat of solution is found by adding a salt to water in a calorimeter and measuring the temperature change. The specific heat of water is 4.180 Joules per g per degree C. In the calculation of the heat of solution, ignore the contribution to specific heat and mass due to the salt. Assume that these contributions are negligible. The data collected are as follows: Calculate the following Change in Joules in water

Explanation / Answer

1) Change in temperature = Final temperature - Initial temperature

Change in temperature = 18.66 - 22.46 = -3.80C (There will be decrease in temperature)

2) Heat of solution = The heat required for dissolution of solution

The heat will be obtained from the water so water will lose heat

Heat loss from water = Mass of water X change in temperature X Specific heat of water

So let us calculatete the heat loss by water

Given:

Mass = 44.80

specific heat of water = 4.18

Change in temperature = -3.80C

heat loss by water = -44.8 X 3.8 X 4.18 = -711.6032 Joules

The answers seems to be correct as this is the right approach to solve this.

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