The permanganate ion is often used to analyze for iron (ii) ion content in aqueous solutions via the reaction: 8h+ + mno4- + 5 fe2+ --> 5 fe3+ + mn2+ + 4 h2o. what is the concentration of the fe2+ solution if 50.00 ml of fe2+ requires 36.43 ml of 0.025 m mno4-?

0.092 M

Explanation:

Let's consider the following redox reaction.

8 H⁺ + MnO₄⁻ + 5 Fe²⁺ → 5 Fe³⁺ + Mn²⁺ + 4 H₂O

The moles of MnO₄⁻ is:

The molar ratio of MnO₄⁻ to Fe²⁺ is 1:5. Then, the moles of Fe²⁺ are:

5 × (9.1 × 10⁻⁴ mol) = 4.6 × 10⁻³ mol

The concentration of Fe²⁺ is:

answer: i would say b.

explanation:

increased stability in the completion of fluorine's outer shell.