The lower molar mass of hydrocarbons has increased
Correct answer: A. Volatility
- A. Volatility
- B. Polarity
- C. Boiling point
- D. None
Explanation
The statement is correct because as the molar mass of hydrocarbons decreases, their volatility increases. Lower molar mass hydrocarbons have weaker intermolecular forces and require less energy to transition from liquid to vapor phase, making them more volatile. Option B, Polarity, is incorrect because polarity is not directly related to molar mass but to electronegativity differences. Option C, Boiling point, is incorrect because boiling points are more influenced by molecular weight than by molar mass. Option D is incorrect as the correct answer is Option A.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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