Referring to the Chemistry in Action essay on page 158, answer the following questions:
(a) Identify the precipitation, acid-base, and redox processes.
(b) Instead of calcium oxide, why don't we simply add sodium hydroxide to seawater to precipitate magnesium hydroxide?
(c) Sometimes a mineral called dolomite (a mixture of CaCO3 and MgCO3) is substituted for limestone to bring about the precipitation of magnesium hydroxide.
What is the advantage of using dolomite?