Question

Why does steam at 373 Kelvin have more energy than water at 373 Kelvin?

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Answer

Steam at 373 Kelvin contains more energy than water at 373 Kelvin due to the following reasons:

  1. Latent Heat of Vaporization: Steam possesses a higher latent heat of vaporization compared to water. This term describes the amount of heat energy required to change the phase of a substance from liquid to gas. Therefore, when water transforms into steam, it absorbs a significant amount of additional energy.

  2. Heat Capacity Comparison: The amount of heat energy, measured in joules, required to raise the temperature of 1 gram of steam by 1 Kelvin is higher than that required to raise the same mass of water by 1 Kelvin.

This indicates that more energy is needed to increase the temperature of steam compared to the energy needed to raise water to the same temperature. Consequently, at the same temperature of 373K, steam contains more energy than water.


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