Benzene-1,4-dicarboxylic acid : poorly soluble in water
Benzene-1,3-dicarboxylic acid : insoluble in water
Benzene-1,2-dicarboxylic acid : slightly soluble in water
#Q1 I don't understand why Benzene-1,2-dicarboxylic acid is more soluble in water than Benzene-1,4-dicarboxylic acid
#Q2 and also why Benzene-1,3-dicarboxylic acid is insoluble in water