When using FerroZine to determine the concentration of iron, how many moles of FerroZine are needed...

Question

Question

When using FerroZine to determine the concentration of iron, how many moles of FerroZine are needed to complex 3.6x10^(-7) mol of iron?

Answer 1

Answer #1

Ans. Balanced reaction: 3 Ferrozine + 1 Fe²⁺ ------------> Na₄Fe(ferrozine)₃

The product Na₄Fe(ferrozine)₃ is a colored complex whose intensity is spectrophotometrically recorded.

Stoichiometry: 3 mol ferrozine complexes with 1 mol Fe²⁺.

It’s assumed that all forms of Fe are converted into Fe²⁺ during sample preparation.

Now,

Moles of ferrozine required = 3 x Moles of Fe²⁺

= 3 x (3.6 x 10^-7 mol)

= 1.08 x 10^-6 mol

Answer 2

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