Neutralization of Ferric Chloride with Aragonite

FeCl3 + 3 HCL + 3 CaCO3 -->





Fe(OH)3+ 3 CaCl2 +3 CO2







& Hrxn (25 C) = -5.776 kcals/mol







& Grxn (25 C) = -32.96 kcals/mol







& Srxn (25 C) = 0.0912 kcals/mol K







..........[ CaCl2] [CO2]^3



Keq = --------------------= 1.449 x 10^24



..........[FeCl3] [HCl]^3


woody out.