the magnitude of surface tension of liquid dpends on the attractive forces between the molecules. Arrange the following in increasing order of surface tension :
Water, alcohol `(C_(2)H_(5)OH)` and hexane `[CH_(3)(CH_(2))_(4)CH_(3)")"]`.

Explanation

To arrange the liquids (water, alcohol, and hexane) in increasing order of surface tension, we will analyze the nature of the intermolecular forces present in each liquid.

### Step-by-Step Solution:

1. **Identify the Nature of Each Liquid**:
- **Water (H₂O)**: Water is a polar molecule and exhibits strong hydrogen bonding due to the significant electronegativity difference between oxygen and hydrogen.
- **Alcohol (C₂H₅OH)**: Ethanol (the type of alcohol given) is also a polar molecule and can form hydrogen bonds, but it contains carbon and hydrogen, which makes its hydrogen bonding slightly weaker compared to water.
- **Hexane (C₆H₁₄)**: Hexane is a non-polar molecule. The intermolecular forces present are primarily weak London dispersion forces due to the lack of polarity.
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