The equilibrium constants are given for the following salts MgCO3 = 6.8x10-6 CaCO3 = 5.0x10-9 BaCO3 = 2.6x10-9 What is the name of the salt that will produce the lowest concentration of carbonate ion in solution? Write the name not the chemical formula. Is it barium carbonate?? Is there a direct relationship between carbonate concentration and E_c? Thanks.