हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

What is the Specific Heat Capacity of Boiling Water?

Advertisements
Advertisements

प्रश्न

What is the specific heat capacity of boiling water?

एक पंक्ति में उत्तर
Advertisements

उत्तर

The specific heat capacity of boiling water is 0.46 cal/g-oC or 1926 J/kg-K.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 25: Calorimetry - Short Answers [पृष्ठ ४६]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
अध्याय 25 Calorimetry
Short Answers | Q 7.2 | पृष्ठ ४६

संबंधित प्रश्न

A geyser heats water flowing at the rate of 3.0 litres per minute from 27 °C to 77 °C. If the geyser operates on a gas burner, what is the rate of consumption of the fuel if its heat of combustion is 4.0 × 104 J/g?


What property of water makes it an effective coolant?


Differentiate between heat capacity and specific heat capacity.


Name a liquid which has the highest specific heat capacity.


Write the approximate value of specific heat capacity of water in S.I. unit.


What do you mean by the following statement?

The heat capacity of a body is 50 JK-1?


Give one example where high specific heat capacity of water is used as cooling purposes?


A heater of power P watt raises the temperature of m kg of a liquid by Δt K in time t s. Express
the specific heat capacity of liquid in terms of above data.


Explain the term boiling ?


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


Give three reasons for the increase of green house gases.


How will global warming disturb the ecological balance?


The global warming has resulted:
(a) the increase in yield of crops
(b) the decrease in sea levels
(c) the decrease in human deaths
(d) the increase in sea levels


What is meant by specific heat capacity? 


Why do the farmers fill their fields with water on a cold winter night?

The substances like water which have ........... Heat capacity warm up more slowly than substances like iron which have .......... heat capacity.


A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as coolant in car radiators.


Water boils at 120 °C in a pressure cooker. Explain the reason.


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


Give two reasons as to why copper is preferred over other metals for making calorimeters.


Some heat is provided to a body to raise its temperature by 25°C. What will be the corresponding rise in temperature of the body as shown on the Kelvin scale?


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


Water falls from a height of 50 m. Calculate the rise in the temperature of water when it strikes the bottom.
(g = 10 ms-2; Specific heat capacity of water = 4200 J / kg°C)


Calculate the amount of heat released when 5.0 g of water at 20°C is changed into ice at 0°C.
(Specific heat capacity of water = 4.2 J/g°C
Specific latent heat of fusion of ice = 336 J/g)


Derive an expression for finding out the specific heat capacity of a body (solid) from the readings of an experiment given below:

(i) Mass of empty calorimeter (with stirrer) = m1 gm

(ii) Mass of the metal piece = M gm

(iii) Mass of colorimeter and water = m2 gm

(iv) Initial temperature and water = t1°C

(v) Temperature of hot solid (metal piece) = t2 °C

(vi) Final temperature of the mixture = t°C

(vii) Specific heat of calorimeter = 0.4 J gm / °C


The specific heat capacity of water is 1 cal/g °C.


Decide the unit for specific heat capacity.


_______ is defined as the amount of heat required to raise the temperature of 1kg of a substance by 1°C.


A monoatomic gas of pressure 'P' having volume 'V' expands isothermally to a volume '2V' and then adiabatically to a volume '16V'. The final pressure of the gas is ______.
(ratio of specific heats = `5/3`)


Heat is applied to a rigid diatomic gas at constant pressure. The ratio ΔQ : ΔU : ΔW is ______.


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


If 'f' is the number of degrees of freedom of a molecule of a gas and ratio of molar specific heats of a gas, ϒ = 1 + `2/"f"` where ϒ = Cp/Cv. The ratio of 'ϒ' for monoatomic gas to 'ϒ' for (rigid) f diatomic gas is ______.


Two metals A and B have specific heat capacities in the ratio 2 : 3. If they are supplied the same amount of heat then

Which metal piece will show a greater rise in temperature given their masses is the same?


Specific heat capacity C =  ______.


Water has the lowest specific heat capacity.


We would like to make a vessel whose volume does not change with temperature (take a hint from the problem above). We can use brass and iron `(β_(vbrass) = (6 xx 10^(–5))/K and β_(viron) = (3.55 xx 10^(–5))/K)` to create a volume of 100 cc. How do you think you can achieve this.


Give one example where high specific heat capacity of water is used as heat reservoir.


Calculate the amount of heat energy required to raise the temperature of 200 g of copper from 20°C to 70°C. Specific heat capacity of copper = 390 J kg-1 K-1.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×