1.   Also, the rain water has been a very weak acid because it links with carbon dioxide in the air.

2.   Slates eventually Decay because of their reaction with weak acids formed from sulphur and other atmospheric pollutants dissolved in rainwater.

3.   The acid microenvironment contributes to intestinal absorption of weak acids.

4.   It favours conversion of these weak acids to their protonated uncharged form which can then diffuse across the apical membrane into the cell.

5.   Cellulose fibers, which are made of molecular chains of carbon atoms, are easily split by even weak acids.