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Solved: Acetone evaporates more quickly than water at room temperature. What can you say
Chapter 12, Problem 13Q(choose chapter or problem)
Acetone evaporates more quickly than water at room temperature. What can you say about the relative strength of the intermolecular forces in the two compounds? Which substance is more volatile?
Questions & Answers
QUESTION:
Acetone evaporates more quickly than water at room temperature. What can you say about the relative strength of the intermolecular forces in the two compounds? Which substance is more volatile?
ANSWER:
Solution 13Q
Here, we are going to discuss about the relative strength of the intermolecular forces in the given two compounds.
Step 1:
Acetone has weaker intermolecular forces compared to water. In case of water(H2O), hydrogen bonding(the attractive force which binds hydrogen atom of one molecule with the electronegative atom of another molecule) takes place between the partially positive hydrogen atom and the partially negative oxygen atom as shown below:
This type of hydrogen bonding is absent in case of acetone(CH3COCH3) due to the absence of polar O-H bond present in water. Thus, it evaporates more quickly than water at room temperature.