Hexane and methanol are miscible as gases but only slightly soluble in each other as liquids because hexane is nonpolar and methanol is polar in nature, as "like dissolves like"
What are polar and non polar molecules?
- Hexane is a non polar molecule because the electronegative difference between the hydrogen and carbon atom is very small, while methanol is polar in nature because oxygen is more electronegative than carbon and hydrogen atom.
- All gases are miscible with each other at normal pressure, thus hexane and methanol are miscible as gases.
- Miscibility describes a mixture of two components in the same phase such as two liquids or two gases unlike solubility which describes the mixture of two different phases.
- Substances with similar polarity tend to be miscible, i.e. "like dissolves like".
- Non polar solvents, held together by Van der Waals forces can't overcome the stronger bonds of polar solvent molecules to get between them and mix. So polar solvents typically mix with other polar solvents, while nonpolar solvents usually mix with other nonpolar solvents.
Thus we can conclude that since "like dissolves like", hexane and methanol forms two separate liquid phases.
Learn more about polar and non polar molecules at https://brainly.com/question/1426521
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