The acidity of aqueous solutions of positive ions is never zero although many texts say incorrectly that most metals of Groups I and II and some others are not acidic. The few cases in which acidity may usually be regarded as negligible, but not zero, include the Group I metals other than lithium and quaternary ammonium ions and similar ions that cannot form a coordinate bond to a water molecule. The acid constants of metal ions are given in Table I one of the article.
Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.