The chief compound in marble is CaCO3. Marble has been widelyused for statues and ornamental work on buildings, including suchstructures as the Taj Mahal (Figure 1) . However, marble is readilyattacked by acids via the following reaction.CaCO3(s)+H+(aq)⇌Ca2+(aq)+HCO3−(aq) Equilibrium constants at 25 ∘Care listed in the table below.
CaCO3 Ksp =4.5×10−9
H2CO3 Ka1 =4.3×10−7
H2CO3 Ka2 =5.6×10−11
Part A What is the molar solubility of marble (i.e., [Ca2+] in asaturated solution) in normal rainwater, for which pH=5.60?
