Which of the following in each pair is likely to be more soluble in hexane, C6H14: (a) CCl4 or CaCl2; (b) benzene (C6H6) or glycerol, CH2(OH)CH(OH)CH2OH; (c) octanoic acid, CH3CH2CH2CH2CH2CH2CH2COOH, or acetic acid, CH3COOH? Explain your answer in each case.

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