You may use the Periodic Table on the front inside cover and the Units and Conversions on the back inside cover of your textbook. In all problems assume activities equal concentrations.
Most minerals are salts of weak acids and strong bases.
Compare your computed pH to the value obtained for the same HCl concentration in problem 4. The natural abundances of minerals depend not only the natural abundances of their component elements, and the degree to which the elements substitute in other minerals, but also on the stability, in terms of Gibbs Free energy, of that mineral. Give some guidelines for deciding which of the two will be rate-limiting. Explain in terms of activity-concentration relations. Give an example of each.