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We need to find that which out of the $ethane$and $ethanol$will be more soluble in water

We know that

The compound which will form more hydrogen bonds will be more soluble in water.

And out of the given compounds $ethanol$will form hydrogen bonds

Therefore, The $ethanol$will be more soluble in water

We need to find that which out of the $2-propanol$and $2-pen\tan ol$will be more soluble in water

We know that

The compound which will form more hydrogen bonds will be more soluble in water.

And out of the given compounds $2-propanol$will form hydrogen bonds

Therefore, The $2-propanol$will be more soluble in water

We need to find that which out of the $methylpropylether$and $1-bu\tan ol$will be more soluble in water

We know that

The compound which will form more hydrogen bonds will be more soluble in water.

And out of the given compounds $1-bu\tan ol$will form hydrogen bonds

Therefore, The $1-bu\tan ol$will be more soluble in water