What do you thinkabout solubility of alkanes in water basedupon non-polar nature of alkanes?
Question
What do you think about solubility of alkanes in water based upon non-polar nature of alkanes?
Solution
The solubility of alkanes in water is generally low due to the non-polar nature of alkanes. Here's a step-by-step explanation:
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Alkanes are hydrocarbons composed of carbon and hydrogen atoms. They have non-polar covalent bonds, meaning the electrons are shared equally between the atoms.
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Water, on the other hand, is a polar molecule. It has a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.
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Like dissolves like, which means that polar substances tend to dissolve in polar solvents, and non-polar substances tend to dissolve in non-polar solvents.
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Since alkanes are non-polar and water is polar, there is a significant difference in their polarity. This difference in polarity makes it difficult for alkanes to dissolve in water.
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The intermolecular forces between water molecules (hydrogen bonding) are much stronger than the intermolecular forces between water and alkanes (London dispersion forces).
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As a result, alkanes are not attracted to water molecules as strongly as water molecules are attracted to each other. This leads to poor solubility of alkanes in water.
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However, alkanes are soluble in non-polar solvents such as hexane or benzene, where the intermolecular forces are similar to those in alkanes.
In conclusion, the non-polar nature of alkanes hinders their solubility in water, as water is a polar solvent.
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