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Calculate the mass of ice needed to cool 150 g of water contained in a calorimeter of mass 50 g at 32 °C such that the final temperature is 5 °C. Specific heat capacity of calorimeter = 0.4 J g-1 °C-1, Specific heat capacity of water = 4.2 J g-1°C-1, latent heat capacity of ice = 330 J g-1.
Concept: Specific Heat Capacity
Calculate the mass of ice required to lower the temperature of 300 g of water 40°C to water at 0°C.
(Specific latent heat of ice = 336 J/g, the Specific heat capacity of water = 4.2J/g°C)
Concept: Specific Heat Capacity
What do you understand by the following statements:
The heat capacity of the body is 60JK-1.
Concept: Specific Heat Capacity
What do you understand by the following statements:
The specific heat capacity of lead is 130 Jkg-1K-1.
Concept: Specific Heat Capacity
State two factors upon which the heat absorbed by a body depends
Concept: Specific Heat Capacity
A copper vessel of mass 100 g contains 150 g of water at 50°C. How much ice is needed to cool it to 5°C?
Given: Specific heat capacity of copper = 0.4 Jg-1 °C-1
The Specific heat capacity of water = 4.2 Jg-1 °C-1
The Specific latent heat of fusion ice = 336 Jg-1
Concept: Specific Heat Capacity
What property of water makes it an effective coolant?
Concept: Specific Heat Capacity
Water in lakes and ponds do not freeze at once in cold countries. Give a reason is support of your answer.
Concept: Specific Heat Capacity
A refrigerator converts 100 g of water at 20°C to ice at -10°C in 35 minutes. Calculate the average rate of heat extraction in terms of watts.
Given: Specific heat capacity of ice = 2.1 J g-1°C-1
Specific heat capacity of water = 4.2 J g-1°C-1
Specific latent heat of fusion of ice = 336 J g-1
Concept: Specific Heat Capacity
50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.
Concept: Specific Heat Capacity
Heat energy is supplied at a constant rate to 100g of ice at 0 °C. The ice is converted into water at 0° C in 2 minutes. How much time will be required to raise the temperature of water from 0 °C to 20 °C? [Given: sp. heat capacity of water = 4.2 J g-1 °C-1, sp. latent heat of ice = 336 J g-1].
Concept: Specific Heat Capacity
Specific heat capacity of substance A is 3.8 J g-1K-1 whereas the specific heat capacity of substance B is 0.4 J g-1 K-1
(i) Which of the two is a good conductor of heat?
(ii) How is one led to the above conclusion?
(iii) If substances A and B are liquids then which one would be more useful in car radiators?
Concept: Specific Heat Capacity
A liquid X has the maximum specific heat capacity and is used as a coolant in Car Radiators. Name the liquid X.
Concept: Specific Heat Capacity
A solid metal weighing 150 g melts at its melting point of 800 °C by providing heat at the rate of 100 W. The time taken for it to completely melt at the same temperature is 4 min. What is the specific latent heat of fusion of the metal?
Concept: Specific Heat Capacity
Heat supplied to a solid change it into liquid. What is this change in the phase called?
Concept: Specific Heat Capacity
During the phase change does the average kinetic energy of the molecules of the substance increase?
Concept: Specific Heat Capacity
State two differences between "Heat Capacity" and "Specific Heat Capacity".
Concept: Heat Capacity vs Specific Heat Capacity
Give a mathematical relation between Heat Capacity and Specific Heat Capacity.
Concept: Specific Heat Capacity
The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.
Given: Specific heat capacity of water = 4200 J kg-1 °C-1 and specific latent heat of ice = 336000 J kg-1.
Concept: Specific Heat Capacity
(i) State whether the specific heat capacity of a substance remains the same when its state changes from solid to liquid.
(ii) Give one example to support your answer.
Concept: Specific Heat Capacity
