Which of the following best describes the term molar heat of fusion? The heat re

Question

Which of the following best describes the term molar heat of fusion? The heat required to convert 1 mole of a liquid substance at its boiling point to the vapor state The heat required at constant pressure to raise the temperature of 1 mole of a substance by 1degreeC The heat required to convert 1 mole of a solid substance at its melting point into the liquid state The heat absorbed or given off by a chemical reaction Which of the following best describes the term molar heat of Vaporization? The heat required to convert 1 mole of a liquid substance at its boiling point to the vapor state The heat absorbed or given off by a chemical reaction The heat required at constant pressure to raise the temperature of 1 mole of a substance by 1degreeC The heat required to convert 1 mole of a solid substance at its melting point into the liquid state

Explanation / Answer

Molar heat of fusion:

The het required to convert 1 mole of a solid substance at its melting point into the liquid state.

Thus, the 3rd option is correct

Molar heat of vaporization:

The het required to convert 1 mole of a liquid substance at its boiling point to the vapor state.

Thus, the 1st option is correct

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