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What is the Specific Heat Capacity of Melting Ice?

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प्रश्न

What is the specific heat capacity of melting ice?

एका वाक्यात उत्तर
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उत्तर

The specific heat capacity of melting ice is 0.50 cal/g-oC or 2093 J/kg-K.

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पाठ 25: Calorimetry - Short Answers [पृष्ठ ४६]

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एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
पाठ 25 Calorimetry
Short Answers | Q 7.1 | पृष्ठ ४६

संबंधित प्रश्‍न

You have a choice of three metals A, B, and C, of specific heat capacities 900 Jkg-1 °C-1, 380 Jkg-1 °C-1 and 460 Jkg-1 °C-1 respectively, to make a calorimeter. Which material will you select? Justify your answer.


Water is used in hot water bottles for fomentation. Give a reason.


An electric heater of power 600 W raises the temperature of 4.0 kg of a liquid from 10.0℃ to 15.0℃ in100 s. Calculate:

  1. the heat capacity of 4.0 kg of liquid,
  2. the specific heat capacity of the liquid.

45 g of water at 50°C in a beaker is cooled when 50 g of copper at 18° C is added to it. The contents are stirred till a final constant temperature is reached. Calculate this final temperature. The specific heat capacity of copper is 0.39 J g-1K-1 and that of water is 4.2 J g-1K-1. State the assumption used.


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


It is generally cold after a hail-storm then during and before the hail storm. Give reason.


Explain the meaning of green house effect.


How will climate changes affect the various animal species?


How will global warming disturb the ecological balance?


What is meant by specific heat capacity? 


Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.


The ratio of specific heat capacity to molar heat capacity of a body _____________ .


Indian style of cooling drinking water is to keep it in a pitcher having porous walls. Water comes to the outer surface very slowly and evaporates. Most of energy needed for evaporation is taken from the water itself and the water is cooled down. Assume that a pitcher contains 10 kg of water and 0.2 g of water comes out per second. Assuming no backward heat transfer from the atmosphere to the water, calculate the time in which the temperature decrease by 5°C. Specific heat capacity of water = 4200 J kg−1 °C−1 and latent heat of vaporization of water = 2.27 × 106 J kg−1.


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


Define the term 'specific heat capacity' and state its unit.


If 10125 J of heat energy boils off 4.5 g of water at 100°C  to steam at 100°C, find the specific latent heat of steam.


What is heat? What is the S. I. unit of heat?


Name the substance which has maximum specific heat capacity.


Why is specific heat capacity taken as a measure of thermal inertia?


Explain, why water is considered as best liquid for quenching thirst?


If substances A and B are liquids then which one would be more useful in car radiators?
Given: Specific heat capacity’A’ 3.8 J/g /K. Specific heat capacity ‘B’ 0.4 J/g /K.


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?


Will the value of specific heat’capacity and specific latent heat of a substance change if the scale is °F instead of °C?


A piece of ice is heated at a constant rate. The variation of temperature with heat input is shown in the graph below:

(i) What are represented by AB and CD?
(ii) What conclusion can you draw regarding the 110°c nature of ice from the above graph?


The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate: Heat capacity of lead piece.


The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate Specific heat capacity of lead.


A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/°C. What is its specific heat capacity in S.I. units?


How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?


The SI unit of specific heat is _______.


Numerical Problem.

What could be the final temperature of a mixture of 100 g of water at 90 °C and 600g of water at 20°C.


Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.


An office room contains about 4000 moles of air. The change in the internal energy of this much air when it is cooled from 34° C to 19° C at a constant pressure of 1.0 atm is (Use `gamma_"air"` = 1.4 and Universal gas constant = 8.314 J / mol K) ____________.


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?


Why is water used as a coolant in radiators of a car?


Specific heat capacity C =  ______.


Conductors have generally high specific heat capacities and insulators have low specific heat capacities.


Two cylinders of equal height and radius are made of copper and aluminum. Which of them conducts heat faster?


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


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