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-A- Equivalent weight of F e 0-95 O is M -0-5 where M is molecular weight of F e 0-95 OB- The number of moles of F e 3- and F e 2- in 1 mole of F e 0-95 O are 0-1 and 0-85 respectivelyC- The number of moles of F e 3- and F e 2- in 1 moles of F e 0-95 O are 0-85 and 0-10 respectivelyD- The - composition of F e 2- and F e 3- in the non-stoichiometric compound is 89-47 - and 10-53 - respectively

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Equivalent Mass

When non-stoi...

Question

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?

Equivalent weight of

F e_{0.95} O

\frac{M}{0.5}

where

M

is molecular weight of

F e_{0.95} O

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The number of moles of

F e^{3 +}

and

F e^{2 +}

1 m o l e

F e_{0.95} O

are

0.1

and

0.85

respectively

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The number of moles of

F e^{3 +}

and

F e^{2 +}

1 m o l e s

F e_{0.95} O

are

0.85

and

0.10

respectively

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The

%

composition of

F e^{2 +}

and

F e^{3 +}

in the non-stoichiometric compound is

89.47 %

and

10.53 %

respectively

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Solution

The correct options are
B The number of moles of $F e^{3 +}$ and $F e^{2 +}$ in $1 m o l e$ of $F e_{0.95} O$ are $0.1$ and $0.85$ respectively
D The $%$ composition of $F e^{2 +}$ and $F e^{3 +}$ in the non-stoichiometric compound is $89.47 %$ and $10.53 %$ respectively
$F e_{0.95} O + O_{2} \to F e_{2} O_{3}$
$Let x be the fraction of Fe3+ in the compound then Fe2+=(0.95−x)$
$x \times 3 + (0.95 - x) \times 2 - 2 = 0$
$x = 0.1$
$% o f F e^{2 +} = \frac{0.85}{0.95} \times 100 = 89.47 %$

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Similar questions

Q. When non-stoichiometric compound

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When non-stoichiometric compound Fe0.95O is heated in the presence of oxygen, it converts into Fe2O3, then which of the following statements are correct?

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?