The concentration of an aqueous solution of iron(II) chloride is 0.0550 M. What

Question

The concentration of an aqueous solution of iron(II) chloride is 0.0550 M. What is the molarity of each ion in this solution?


A) 0.0550 M for both the iron(II) and chloride ions.
B) 0.0550 M for the iron (II) ion and 0.110 M for the chloride ion.
C) 0.110 M for the iron (II) ion and 0.0550 M for the chloride ion.
D) no enough information is given to determine each molarity

Can you please show me a step by step on how to do this? Thank you

Explanation / Answer

FeCl2 =====> Fe2+ + 2 Cl- so the molar ratio is 1 FeCl2 :1 Fe2+ :2 Cl- 0.0550 M FeCl2*( 1 Fe2+/1 FeCl2) 0.0550 M Fe2+ 0.0550 M FeCl2 *(2 Cl-/1 FeCl2) 0.110 M Cl- so the answer is B) 0.0550 M for the iron (II) ion and 0.110 M for the chloride ion.

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