Acidic character of phenol

The decreasing order of acidic character of the following is : (I) p-Nitrophenol (II) o-Nitrophenol (III) m-Nitrophenol (IV) Phenol.

Arrange the following in increasing order of their acidic character: Ethanol, phenol, water.

Acidic nature of phenol is due to

Acidic character of fatty acids depends on