Chemistry, asked by vijaythalabathi71, 8 months ago

Balance the following equation in the acidic medium by oxidation number method. MnO4– + C2H2O4 + H+ ----> Mn²+ + 2CO2 + H2o​

Answers

Answered by rmdolic11
0

Explanation:

11th

Chemistry

Redox Reactions

Balancing Redox Reactions

For the redox reaction, MnO...

CHEMISTRY

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Asked on October 15, 2019 by

Joshraj Pannerselvam

For the redox reaction, MnO

4

+C

2

O

4

2−

+H

+

→Mn

2+

+CO

2

+H

2

O, the correct coefficients of the reactants for the balanced equation are _____________.

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ANSWER

The unbalanced redox reaction is MnO

4

+C

2

O

4

2−

+H

+

→Mn

2+

+CO

2

+H

2

O

Balance C atoms.

MnO

4

+C

2

O

4

2−

+H

+

→Mn

2+

+2CO

2

+H

2

O

The oxidation number of Mn decreases from +7 to +2.

The decrease in the oxidation number is 7−2=5

The oxidation number of C increases from +3 to +4.

The increase in the oxidation number for 1 C atom is 4−3=1

The increase in the oxidation number for 2 C atom is 2×1=2

To balance the increase in the oxidation number with decrease in the oxidation number, multiply Mn containing species with 2 and C containing species with 5.

2MnO

4

+5C

2

O

4

2−

→2Mn

2+

+10CO

2

Balance O atoms by adding 8 water molecules to the products side.

2MnO

4

+5C

2

O

4

2−

→2Mn

2+

+10CO

2

+8H

2

O

Balance H atoms by adding 16 H

+

ions to the reactants side.

2MnO

4

+5C

2

O

4

2−

+16H

+

→2Mn

2+

+10CO

2

+8H

2

O

This is the balanced equation.

Answered by rekha9934
0

Answer:

the explanation is:

2MnO4- +6H+ +5C2H2O4-------> 2Mn2+ + 10CO2 + 8 H2O

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