In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150°C is dropped in a copper calorimeter (of water equivalent 0.025 kg) containing 150 cc of water at 27°C. The final temperature is 40°C. If heat losses to the surroundings is not negligible, then the value of specific heat (in cal/g°C) of the metal will be_____
Here, mass of metal, m = 0.20 kg =200 g
Fall in temperature of metal
Ife is specific heat of the metal, then heat lost by the metal,
……….(i)
Volume of water = 150 cc
Mass of water, m' = 150g
Water equivalent of calorimeter
Rise in temperature of water in calorimeter
Heat gained by water and calorimeter
From Eqs. (i) and (i), we get
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The mass, specific heat capacity and the temperature of a solid are , and respectively. The mass of the liquid and the calorimeter are and . Initially, both are at room temperature . Both calorimeter and the solid are made of same material. In the steady state, temperature of mixture is , then find the specific heat capacity of the unknown liquid.
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