Explain the water solubilities in different compounds?

Please explain the order of water solubilities for the compounds in each of the following groups:

a) Ethanol>Choloroethane>Ethane

b) Methanol>Ethanol>1-propanol

Answer:
There is the broad statement of "like dissolves like"

Since water is very polar, it will have a hgher solubility with very polar compounds.

In your group a, only ethanol is polar. The others will have low or no solubility in water

In group b, the sequence again follows the amount of polarity. Methanol, ethanol and propanol have the same OH group, but as the carbon chain gets bigger, the percentage of the polarity in the molecule goes down
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