English

What is meant by specific heat capacity? - Science and Technology 1

Advertisements
Advertisements

Question

What is meant by specific heat capacity? 

Explain

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 1oC (or 1 K). 

It is given as

`s  =(DeltaQ)/(DeltaT xxm)`

where,

`DeltaQ = "Amount of heat energy supplied"`

`DeltaT = "Rise in temperature"`

`m = "Mass of the body"`

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Heat - Exercises [Page 71]

RELATED QUESTIONS

Differentiate between heat capacity and specific heat capacity.


Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?


Name three fossil fuels that emit carbon dioxide into the atmosphere ?


State the effect of enhancement of green house effect.


What is meant by global warming?


In Regnault's apparatus for measuring specific heat capacity of a solid, there is an inlet and an outlet in the steam chamber. The inlet is near the top and the outlet is near the bottom. Why is it better than the opposite choice where the inlet is near the bottom and the outlet is near the top?


The product of mass and specific heat is known as ..........


Does the specific heat capacity of a substance depend upon its mass and rise in temperature only?


Explain, why do sandy soils, get heated up quickly as compared to wet soils?


Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.


How much heat energy is released when 5 g of water at 20° C changes to ice at 0° C?
[Specific heat capacity of water = 4.2 J g-1 ° C-1 Specific latent heat of fusion of ice = 336 J g-1]


Answer the following question.

Why do we generally consider two specific heats of a gas?


All metals have the same specific heat capacity.


Decide the unit for specific heat capacity.


Read this activity and answer the following questions.

  1. Take three spheres of iron, copper and lead. the lead of equal mass.
  2. Put all the three spheres in boiling water in the beaker for some time.
  3. Take the three spheres out of the water.
  4. All the spheres will be at a temperature 100 °C.
  5. Put them immediately on the thick slab of wax.
  6. Note, the depth that each of the sphere goes into the wax.

Questions:

  1. Which property is determined from this activity?
  2. Give name to that property.
  3. Explain the term principal of heat exchange with the help of this activity.

Derive Meyer’s relation for an ideal gas.


For a gas, `"R"/"C"_"v"=0.4`, where R Is universal gas constant and Cv is the molar specific heat at constant volume. The gas is made up of molecules, which are ______


At same temperature and pressure of an ideal gas, ____________.


The molar specific heat of an ideal gas at constant pressure and constant volume is 'Cp' and 'Cv' respectively. If 'R' is the universal gas constant and the ratio 'Cp' to 'Cv' is 'γ' then CV = ______.


Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×