Rainwater is acidic because CO21g2 dissolves in the water,
creating carbonic acid, H2CO3. If the rainwater is too acidic,
it will react with limestone and seashells (which are principally
made of calcium carbonate, CaCO3). Calculate the
concentrations of carbonic acid, bicarbonate ion 1HCO3-2
and carbonate ion 1CO32 - 2 that are in a raindrop that has
a pH of 5.60, assuming that the sum of all three species in
the raindrop is 1.0 * 10-5 M.
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