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Question

The latent heat of vaporisation of water is:
  1. 2.25×106J/kg
  2. 2.25×108J/kg
  3. 2.25×104J/kg
  4. 2.25×106J/kg

A
2.25×108J/kg
B
2.25×106J/kg
C
2.25×106J/kg
D
2.25×104J/kg
Solution
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The heat of fusion for water at 0 °C is approximately 334 joules (79.7 calories) per gram, and the heat of vaporization at 100 °C is about 2,250 joules (533 calories) per gram or 2.25106 J/kg.

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Similar Questions
Q1

The latent heat of vaporisation of water is:
(a) 2.25×106J/Kg (a) 3.34×106J/Kg
(c) 2.25×104J/Kg (d) 33.4×105J/Kg

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Q2

The latent heat of fusion of ice is:

(a) 33.4 ×105J/Kg (b) 22.5 ×105J/Kg
(c) 33.4 ×104J/Kg (d) 2.25 ×104J/Kg

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Q3
1 kg of water is converted into steam at the same temperature and at 1 atm (100 kPa). The density of water and steam are 1000 kgm3 and 0.6 kgm3 respectively. The latent heat of vaporisation of water is 2.25×106Jkg1. What will be increase in energy?
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Q5
The increase in internal energy of 1 kg of water at 1000C when it is converted into steam at the same temperature and at 1atm (100kPa) will be [The density of water and steam are 1000kg/m3 and 0.6kg/m3 respectively. The latent heat of vapourisation of water is 2.25×106J/kg] :
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