The reaction between thiocyanate ion and ferric ion is given below. If $SCN^-$ ions are added to the equilibrium mixture,what will happen? $SCN^-_{(aq)} (\text{colorless}) + Fe^{3+}_{(aq)} (\text{yellow}) \rightleftharpoons [Fe(SCN)]^{2+} (\text{deep red})$

  • A
    The solution will become deep red.
  • B
    There is no effect.
  • C
    The solution will become colorless.
  • D
    The solution will become yellow.

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