Form among the following choose the solutions with positive and negative deviations
(1) ROH+ROR
(2) RSH+ROR
(3) `CHCl_(3)+CH_(3)COCH_(3)`
(4) HF+ROH

Explanation

To determine which solutions exhibit positive and negative deviations from Raoult's law, we need to analyze the interactions between the components of each solution.

### Step-by-Step Solution:

1. **Understanding Deviations from Raoult's Law**:
- **Positive Deviation**: Occurs when the vapor pressure of the solution is greater than predicted by Raoult's law. This happens when the interactions between different molecules (solute and solvent) are weaker than the interactions among the molecules of the pure components.
- **Negative Deviation**: Occurs when the vapor pressure of the solution is lower than predicted by Raoult's law. This happens when the interactions between different molecules (solute and solvent) are stronger than the interactions among the molecules of the pure components.

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