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Faraday's First Law

FeO is found ...

Question

FeO is found with a composition of $F e_{0.95}$ O. It ranges from $F e_{0.93}$ O to Fe_0.95O. Which type of defect is it showing here?

A

Stoichiometric

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B

frenkel

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C

Metal – excess

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D

Metal-deficiency

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Solution

The correct option is D
Metal-deficiency

For ideal crystal the formula is FeO means for every one atom of oxygen there is one atom of Fe. If it is metal deficiency defect there is less amount of metal for the anion.That's why the general formula is Fe_1-xO.

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FeO is found with a composition of $F e_{0.95}$ O. It ranges from $F e_{0.93}$ O to Fe_0.95O. Which type of defect is it showing here?

FeO is found with a composition of $F e_{0.95}$ O. It ranges from $F e_{0.93}$ O to Fe_0.95O. Which type of defect is it showing here?

Q. Analysis shows that FeO has a non-stoichiometric composition with formula

F e_{0.95}

O. Give reason.

Q. When non-stoichiometric compound

F e_{0.95} O

is heated in the presence of oxygen, it converts into

F e_{2} O_{3}

, then which of the following statements are correct?

Q. Given a reaction,

{F e}_{0.95} O

(molar mass = M)

⟶ {F e}_{2} O_{3}

. What is the equivalent weight of

{F e}_{0.95} O

?

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