Which solution will contain the lower concentration of chloride ions? 0.50 mol/L barium chloride or 0.90 mol/L sodium chloride?

Question

barium chloride
sodium chloride
They contain the same concentration of chloride ions.
This must be determined experimentally.

hcbiochem · Answer

sodium chloride

Barium chloride is BaCl2. 0.50 mol/L BaCl2 X (2 mol Cl- / 1 mol BaCl2) = 1.0 mol/L Cl-.
This is higher than the 0.90 mol/L of Cl- in the NaCl solution.

Which solution will contain the lower concentration of chloride ions? 0.50 mol/L barium chloride or 0.90 mol/L sodium chloride?

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