Ammonia has a boiling point of ______.

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NHPC JE Mechanical 6 April 2022 (Shift 2) Official Paper
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  1. −22°C
  2. −11°C
  3. −66.66°C
  4. −33.3°C

Answer (Detailed Solution Below)

Option 4 : −33.3°C
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Detailed Solution

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Explanation:

The input energy required to change the state from liquid to vapour at constant temperature is called the latent heat of vaporization.

When a liquid vaporizes at the normal boiling point the temperature of the liquid will not rise beyond the temperature of the boiling point.

Ammonia (NH3) has maximum latent heat at their normal boiling point.

Latent heat of vaporization of Sulfur dioxide(SO2)  at its normal boiling point (−10 °C) is 382KJ/Kg

The latent heat of vaporization of Carbon dioxide(CO2)  at its normal boiling point (-78.46 °Cis (574kJ/kg).

Latent heat of vaporization of Ammonia(NH3) at its normal boiling point is (−33.34 °C) is (1370kJ/kg)

The latent heat of vaporization of R-12 at its normal boiling point (−29.8 °C) is  165kJ/kg.
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