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प्रश्न
Give two reasons as to why copper is preferred over other metals for making calorimeters.
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उत्तर
Copper is preferred over other metals for making calorimeters because:
(i) It has a low specific heat capacity.
(ii) It takes negligible amount of heat from its contents to attain the temperature of the contents.
संबंधित प्रश्न
What amount of heat must be supplied to 2.0 x 10-2 kg of nitrogen (at room temperature) to raise its temperature by 45 °C at constant pressure? (Molecular mass of N2 = 28; R = 8.3 J mol-1 K-1.)
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Name a liquid which has the highest specific heat capacity.
45 g of water at 50°C in a beaker is cooled when 50 g of copper at 18° C is added to it. The contents are stirred till a final constant temperature is reached. Calculate this final temperature. The specific heat capacity of copper is 0.39 J g-1K-1 and that of water is 4.2 J g-1K-1. State the assumption used.
Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?
63.2 g of copper at 50°C can just melt 3.8g of ice. If the specific latent heat of ice is 336 J/g, find the specific heat capacity of copper.
A vessel of negligible heat*capacity contains 40g of ice in it at 0°C, 8g of steam at 100°C is passed into the ice to melt it. Find the final temperature of the contents of the vessel.
(Specific latent heat of vaporization of steam = 2268 J/g, specific latent heat of fusion of ice = 336 J/f and specific heat capacity of water = 4.2 J/g°C)
Explain how heat capacity of a solid can be determined by the method of mixture.
Which method is used to determine the specific heat capacity of both solids and liquids by mixing a substance of unknown specific heat with water?
