The latent heat of vaporisation of water is 2.26 x 105 J kg-1 22.6 x 105 J kg-1 22.6 x 106 J kg-1 6.22 x 105 J kg-1
Question
The latent heat of vaporisation of water is
- 2.26 x 10^5 J kg^-1
- 22.6 x 10^5 J kg^-1
- 22.6 x 10^6 J kg^-1
- 6.22 x 10^5 J kg^-1
Solution
To address the query regarding the latent heat of vaporization of water, let's follow these steps:
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Identify the Question
We need to determine the correct value of the latent heat of vaporization of water from the provided options.
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Relevant Concepts
The latent heat of vaporization is the amount of heat required to convert unit mass of a substance from liquid to gas at constant temperature and pressure. For water, this value is commonly accepted as approximately .
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Analysis of Options
- Option A: - This is incorrect as it is an order of magnitude lower than the accepted value.
- Option B: - This is equivalent to , which is the correct value.
- Option C: - This is incorrect; it is an order of magnitude higher than the accepted value.
- Option D: - This is also incorrect and significantly lower than the accepted value.
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Verify and Summarize
Comparing the given options with the known value of latent heat of vaporization for water, we conclude that the correct option is B, which represents .
Final Answer
The correct value of the latent heat of vaporization of water is , corresponding to option B.
Similar Questions
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he specific heat capacity of water is 4.2 kJ/kg°C.Calculate the energy required to increase the temperature of 0.60 kg of water from 31°C to 56°C.
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