All form ideal solutions except:

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(D) An ideal solution is formed by components that are chemically similar in structure and polarity,leading to similar intermolecular forces of attrac

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$C_2H_5I$ and $C_2H_5OH$

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(D) An ideal solution is formed by components that are chemically similar in structure and polarity,leading to similar intermolecular forces of attraction. $C_2H_5Br$ and $C_2H_5I$,$C_2H_5Cl$ and $C_2H_5Br$,and $C_6H_6$ and $C_6H_5CH_3$ are pairs of homologous series or structurally similar compounds,which form nearly ideal solutions. However,$C_2H_5I$ (an alkyl halide) and $C_2H_5OH$ (an alcohol) have different polarities and intermolecular forces (alcohol exhibits hydrogen bonding),so they form a non-ideal solution.

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