Explain how specific latent heat of fusion can be determined using mixture method.

Explain how specific latent heat of fusion can be determined using mixture method.

Answers

A piece of dry ice is dropped into a calorimeter containing water slightly above room temperature. Stir the mixture until all the ice has melted. Suppose there is no heat loss to the surroundings, then the heat energy lost by the water and calorimeter equals the heat energy gained by the melting ice

In the above experiment, the following data is recorded for purposes of determining the specific latent heat of fusion:
-Mass of the dry ice
-mass of the water in the calorimeter
-mass of the calorimeter plus stirrer
-Temperature change of the water
Hence mc??w + mc??c = mlf
Lf = (mc??w + mc??c)/mi
NoteDry ice is used due to its low moisture content. This implies that all the heat absorbed by the ice is used to melt the ice and not warming the moisture.

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sharon kalunda answered the question on April 24, 2019 at 09:51

Next: Using a graph discuss the change of state when ice is heated from -2⁰C until it boils.
Previous: Describe an experiment that can be used to determine the specific latent heat of vaporization of water using mixture method.

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