1) Propose a reason why the specific heat of a solution would be slightly differ

Question

1) Propose a reason why the specific heat of a solution would be slightly different that the specific heat of pure water.

2) The temperature change for the water was slight in your experiments while the temperature change for the metal was large. Why was this the case?

3) The water gained energy from the metal. Describe the interaction and heat exchange between the metal and the water from both the metal and the water using equations and conventional signs/symbols.

4) Why do I cool off when I stand in front of a fan even though the fan is blowing air on me that is the same temperature as the rest of the air around me?

Explanation / Answer

a) Pure water has hydrogen bonding, so specific heat will be higher in order to break the bonds.

b) specific heat in all the other experiments were solutions so had a lower specific heat. lower to break bonds, metal was added to pure water not a solution.

c) h20 gains energy lost by the metal,

d) fan allows your sweat to evaporate faster, (wind-chill afftect)

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