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Effect of Catalyst

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what is the ratio of Fe2+ and Fe3+ in Fe0.94S1

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Q. The ratio of

F e^{3 +}

F e^{2 +}

F e_{0.9} S_{1.0}

F e

has two oxidation states

F e^{2 +}

F e^{3 +}

, the correct order of radii of these ions will be:

Q. At equimolar concentrations of

F e^{2 +}

F e^{3 +}

A g^{+}

] be so that the voltage of the galvanic cell made from the (

A g^{+} | A g)

F e^{3 +} | F e^{2 +})

electrodes equals zero ?

F e^{2 +} + A g^{+} ⇌ F e^{3 +} + A g

E_{A g^{o} | A g}^{o} = 0.7991; E_{F e^{3 +} | F e^{2 -}}^{o} = 0.771

Q. Mole ratio of

F e

F e O

{F e}_{2} O_{3}

{F e}_{3} O_{4}

samples of equal mass is:

Q. What is the standard reduction potential

(E^{o})

F e^{3 +} \to F e

F e^{2 +} + 2 e 6 - \to F e; E_{F}^{o} e_{F e^{2 +} / F e} = - 0.47 V

F e^{3 +} + e^{-} \to F e^{2 +}; E_{F e^{3 +} / F e^{2 +}}^{o} = + 0.77 V

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