Chem 201 - Qualitative Analysis Lab

Other metal ions (such as Pb 2+, Cu 2+, Al3+ and Zn 2+) will test only weakly acidic (3<pH<6). When a substance dissolves in water and causes an increase in the concentration of hydroxide ions (OH - ), the substance is considered to be a base.

  Analysis, Qualitative, 201 qualitative analysis lab