Today while living the organic chemistry adventure, I learned that the acidity of carboxylic acids can be explained two different ways which more than likely work together. Resonance effects and inductions effects both take place on the carboxylic acids. When the double bond in the carboxyl group is moved to form resonant structures, they are not equal because of the hydrogen atom present. This resonance requires that the charge is separated and that does'nt make that atom relatively more stable.
Inductive effects are due to the carbonyl group.
The book divides the carboxyl group into its repective parts. The O-H bond is polarized because of the oxygen's electronegativity. The carbonyl group is also very polarized and it behaves like the resonance structures shown in the book. Anyway the carbon is very positive and it induces its charge on the O-H bond and increases the polarity of it. This causes the hydrogen atom to be very positive and it separates easier.