Interpretation: The kilojoules of heat required to vaporize a given amount of ethanol is to be calculated.
Concept introduction: The molar enthalpy of vaporization is the amount of energy that must be added to 1 mole of a liquid substance to transform into 1 mole of gas at constant pressure.
Answer to Problem 32LC
The kilojoules of heat required to vaporize
Explanation of Solution
Molar enthalpy of vaporization for ethanol is
This means when 1 mole of ethanol is vaporized,
Moles of a substance is found by dividing the given amount of substance by the molecular mass of the substance.
For
Thus, for
Chapter 17 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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