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Which of the given pairs are members of the same homologous series?C4H8 and C6H10C4H10 and C6H14C3H7COOH and C5H9COOHC4H7OH and C6H11OH

Question

Which of the given pairs are members of the same homologous series?

  • C4H8 and C6H10
  • C4H10 and C6H14
  • C3H7COOH and C5H9COOH
  • C4H7OH and C6H11OH
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Solution

The homologous series is a series of organic compounds having the same functional group and similar chemical properties due to the presence of the same functional group. The difference between the two consecutive members is -CH2- group.

  1. C4H8 and C6H10: The general formula for alkenes is CnH2n. Both of these compounds fit into this formula, so they are members of the same homologous series.

  2. C4H10 and C6H14: The general formula for alkanes is CnH2n+2. Both of these compounds fit into this formula, so they are members of the same homologous series.

  3. C3H7COOH and C5H9COOH: The general formula for carboxylic acids is CnH2n+1COOH. The first compound fits into this formula, but the second one does not. So, they are not members of the same homologous series.

  4. C4H7OH and C6H11OH: The general formula for alcohols is CnH2n+1OH. Neither of these compounds fit into this formula, so they are not members of the same homologous series.

So, the pairs C4H8 and C6H10, and C4H10 and C6H14 are members of the same homologous series.

This problem has been solved

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