1.

Indicate the graph showing the variation of specific heat of water with temperature . What does it signify?

Answer»

Solution :The variation of specific heat of water with the temperature is as shown in the graph .

From the graph , we find that at`T=15^(@)C` , specific heat of water, `S=1 " calg"^(-1).^(@)C^(-1)`
At `T=0^(@)C,S=1 .008"Calg"^(-1).^(@)C^(-1) " the hight est and at " T = 30 ^(@)C,s = 0.9976 "Calg"^(-1).^(@)C^(-1),` of water increases slightly with rise in temperature .
At`T=100^(@)C` , specific heat of water is`1.0057"cal"g^(-1).^(@)C^(-1)`.
It signifies that the specific heat of water DECREASES with increase in temperature from`0^(@) " to "30^(@)C` and increases from`30^(@)-100^(@)C`.


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