Science, asked by saritaChauhan, 8 months ago

FeSO⁴.......Fe²O³+SO²+SO³ define it​

Answers

Answered by kunjika158
1

Answer:

Start by identifying the oxidation state for each of the element:

+

2

Fe

+

6

S

2

O

4

+

3

Fe

2

2

O

3

+

+

4

S

2

O

2

+

+

6

S

2

O

3

NOT BALANCED

Only three of the four chemicals-

FeSO

4

,

Fe

2

O

3

, and

SO

2

are directly involved in the redox reaction.

The oxidation state of iron

Fe

has increased from

+

2

in

+

2

Fe

+

6

S

2

O

4

to

+

3

in

+

3

Fe

2

2

O

3

by one

and therefore

Fe

is oxidized.

The oxidation state of sulfur

S

has declined from

+

6

in

+

2

Fe

+

6

S

2

O

4

to

+

4

in

+

4

S

2

O

2

by two

and therefore some of the sulfur atoms have been reduced.

The total increases in oxidation numbers shall be the same as the sum of decreases in oxidation numbers in a balanced redox reaction.

The oxidation number increases by

1

for each mole of

Fe

atom oxidized and decreases by

2

for each mole of

S

oxidized.

Therefore for each mole of

S

reduced, two moles of

Fe

atoms shall be oxidized.

Note that sulfur dioxide,

+

4

S

2

O

2

, is the only species containing sulfur atoms of oxidation state

+

4

. Thus all of the reduced sulfur atoms would end up in

SO

2

.

The number of moles of sulfur atoms reduced shall therefore equal to the number of

SO

2

molecules produced. This number would be slightly smaller than that of

+

2

Fe

+

6

S

2

O

4

given that sulfur atoms that were not reduced got eventually into

+

6

S

2

O

3

.

Add coefficients

2

and

1

in front of

FeSO

4

and

SO

2

, respectively:

2

l

+

2

Fe

+

6

S

2

O

4

+

3

Fe

2

2

O

3

+

1

l

+

4

S

2

O

2

+

+

6

S

2

O

3

NOT YET BALANCED

Deduce coefficients for the rest of the species based on the conservation of iron and sulfur atoms.

2

l

+

2

Fe

+

6

S

2

O

4

1

l

+

3

Fe

2

2

O

3

+

1

l

+

4

S

2

O

2

+

1

l

+

6

S

2

O

3

BALANCED

Take coefficients "

1

" out of the expression:

2

l

FeSO

4

Fe

2

O

3

+

SO

2

+

SO

3

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