Advertisements
Advertisements
Question
What is meant by specific heat capacity?
Advertisements
Solution
Specific heat capacity of a body can be defined as the amount of heat energy required to raise the temperature of the unit mass of that body by 1°C (or 1 K).
It is given as:
s = `(Delta Q)/(DeltaT xx m)`
where,
ΔQ = Amount of heat energy supplied
ΔT = Rise in temperature
m = Mass of the body
APPEARS IN
RELATED QUESTIONS
State two factors upon which the heat absorbed by a body depends
Water in lakes and ponds do not freeze at once in cold countries. Give a reason is support of your answer.
During the phase change does the average kinetic energy of the molecules of the substance increase?
In an experiment to determine the specific heat capacity of a solid following operations were
made:
Mass of calorimeter + stirrer = x kg
Mass of water = y kg
Initial temperature of water t1℃
Mass of solid = z kg
Temperature of solid = t2 ℃
Temperature of mixture = t ℃
Specific heat capacity of calorimeter and water are c1 and c2 respectively. Express the specific
heat capacity c of the solid in terms of the above data.
How will rise in sea level affect population in coastal countries?
How will global warming disturb the ecological balance?
Read the following paragraph and answer the questions.
|
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box (meaning that the energy exchange takes place between the two objects only), then no energy can flow from inside the box or come into the box. |
- Heat is transferred from where to where?
- Which principle do we learn about from this process?
- How will you state the principle briefly?
- Which property of the substance is measured using this principle?
The ratio of specific heat capacity to molar heat capacity of a body _____________ .
A solid of mass 80 g at 80°C is dropped in 400 g water at 10°C. If final temp. is 30°C, find the sp. heat cap. of the solid.
650 J of heat is required to raise the temp. of 0.25 kg of lead from 15°C to 35°C. Calculate the Sp. heat capacity of lead.
What are other units of heat? Name and define them.
Write the approximate values of the specific latent heat of vaporization of steam.
Explain, why water is considered as best liquid for quenching thirst?
Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.
Discuss how high specific heat capacity of water helps in formation of land and sea breeze.
A substance is in the form of a solid at 0°C. The amount of heat added to this substance and the temperature of the substance are plotted on the following graph:

If the specific heat capacity of the solid substance is 500 J/kg °G, find from the graph, the mass of the substance.
Write the name.
The amount of heat absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase.
What is the amount of heat required to raise the temperature of 5 kg of iron from 30°C to 130°C? Specific heat capacity of iron = 483 Jkg-1C-1.
The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv, respectively. If `gamma = "C"_"p"/"C"_"v"` and R is the universal gas constant, then Cv is equal to ______.
