Question:
What is the molar mass of the third member of the homologous series if the molar mass of the first member is 46 g?
What is the molar mass of the third member of the homologous series if the molar mass of the first member is 46 g?
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The molar mass of successive members of a homologous series increases by approximately 14 g/mol.
Updated On: Apr 13, 2025
- 60 g
- 74 g
- 138 g
- 80 g
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The Correct Option is B
Solution and Explanation
In a homologous series, the members differ by a constant amount, often CH$_2$. The molar mass of each succeeding member increases by 14 g/mol (the molar mass of CH$_2$). Starting from 46 g for the first member, the third member has a molar mass of 74 g.
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