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प्रश्न
Explain the statement; “The specific latent heat of vaporization of wafer is 2260 × 103 J/kg”.
उत्तर
It means that at 100°C, 2260 × 103 J of heat energy is absorbed by 1 kg of water to convert it into steam at 100°C, or 1 kg of steam at 100°C liberates 2260 × 103 J of heat energy in converting into 1 kg of water at 100°C.
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संबंधित प्रश्न
Which has more heat: 1 g ice at 0℃ or 1g water 0℃? Give reason.
- Which requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃?
- Explain your answer in part (a).
Explain the following:
The surrounding become pleasantly warm when water in a lake starts freezing in cold countries.
What is meant by latent heat? How will the state of matter transform if latent heat is given off?
A thermally insulated pot has 150 g ice at temperature 0°C. How much steam of 100°C has to be mixed to it, so that water of temperature 50°C will be obtained? (Given : latent heat of melting of ice = 80 cal/g, latent heat of vaporization of water = 540 cal/g, specific heat of water = 1 cal/g °C)
Explain the following temperature Vs. time graph:
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(i) Specific latent heat,
(ii) Specific latent heat of fusion.
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Explain the meaning of the term latent heat. State its S. I. unit.
State two advantages of the high specific latent heat capacity of steam, which is about 226 × 104 J/kg?
What observation you will record and how will you determine the specific latent heat of fusion of ice?
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Match the columns.
| Column A | Column B |
| 1) Specific latent heat of fusion | a) Air saturated with vapour |
| 2) Specific latent heat of vaporisation | b) Solid converts into liquid |
| 3) Dew point temperature | c) liquid converts into gas |
Write the name.
Products obtained when sugar is heated.
Write the name.
The phase in which solid substances are converted into liquid.
The latent heat of vaporisation is a term referred for the conversion of gas into liquid.
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Give some practical applications of specific latent heat of ice.
