Based on solute `-` solvent interactions, arrange the following in order of increasing solubility in `n-`octane and explain the result. Cyclohexane, `KCl,CH_(3)OH,CH_(3)CN`.

Explanation

To determine the order of increasing solubility of the compounds (Cyclohexane, KCl, CH3OH, and CH3CN) in n-octane, we need to consider the nature of n-octane and the solute-solvent interactions based on polarity.

### Step-by-Step Solution:

1. **Identify the Nature of n-Octane**:
- n-Octane is a non-polar organic solvent. Non-polar solvents tend to dissolve non-polar solutes better due to the principle of "like dissolves like".

2. **Analyze the Solutes**:
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