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Question:

Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH3OH, CH3CN.

Answer:

n-octane is an organic solvent (liquid)

Out of given examples cyclohexane is strongest organic solvent, so according to like dissolves like, cyclohexane is most likely to be dissolved as a solute in n octane. After cyclohexane, CH3CN

Will be dissolved completely as a solute in n octane, then CH3OH & the least soluble will be Kcl. Also since n-octane & cyclohexane, both of them belongs to alkane category, their solubility will be maximum.

Therefore the order of increasing solubility in n octane is as follows:

Kcl < CH3OH < CH3CN < Cyclohexane


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