Question

Suppose your original unknown contained some dissolved NaCl in addition to the mnSO₄. NaCl is colorless, nonvolatile, and does not react with edta. What is the effect of NaCl on the determination of mnSO₄ using edta?

1) It will increase the concentration of mnSO₄ in the solution
2) It will decrease the concentration of mnSO₄ in the solution
3) It will have no effect on the determination of mnSO₄
4) It will cause a precipitate to form

Answer 1

NaCl will have no effect on the determination of MnSO4 using EDTA because it is colorless, nonvolatile, and does not react with EDTA.

Step-by-step explanation:

If NaCl were present in a solution along with MnSO4 during a determination using EDTA, NaCl would not affect the determination of MnSO4. Since NaCl is colorless, nonvolatile, and does not react with EDTA, it will neither increase nor decrease the concentration of MnSO4 in solution. Additionally, NaCl will not cause a precipitate to form in the presence of EDTA because it does not form an insoluble complex with EDTA like some other salts might.