43. In an aqueous solution, the concentration is [Hg2 ] = 0.01 mol/l, [Fe3 ] = 0.01 mol/l, [Fe2 ] = 0.001 mol/l. Which of the following reactions will occur:
a) 2FeCl3 Hg = 2FeCl2 HgCl2
b) HgCl2 2FeCl2 = Hg 2FeCl3

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