Question
Asked Oct 15, 2019

Balance the given equations by inserting the appropriate coeffiencients

P4 + O2 -> P2O5

C2H6 + O2 -> CO2 + H2O

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Expert Answer

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Step 1

A balanced chemical equation or reaction is the one in which the total number of atoms for each element in the reactant side (left hand side) is equal to the total number of atoms for each element in the product side (right hand side).

The simple steps to balance a chemical reaction are:

  1. Write down your given equation.
  2. Write down the number of atoms per element.
  3. First start balancing with single elements, other than hydrogen and oxygen atoms.
  4. Use a coefficient to balance the single elements.
  5. Balance the hydrogen atoms next.
  6. Balance the oxygen atoms at last.
Step 2

P4 + O2 → P2O5

This equation can be balanced as follows:

Firstly, balancing of P atoms can be done by adding co-efficient 2 with P2O5. The equation becomes:

P4 O22 P2O5
No. of atoms
No. of atoms
Atoms
on reactant side on product side
4
4
2
10
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P4 O22 P2O5 No. of atoms No. of atoms Atoms on reactant side on product side 4 4 2 10

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Step 3

Then, balance O atoms by adding co-efficient 5 with ...

P4
5 O22 P2O5
No. of atoms
No. of atoms
Atoms
on reactant side on product side
4
4
10
10
help_outline

Image Transcriptionclose

P4 5 O22 P2O5 No. of atoms No. of atoms Atoms on reactant side on product side 4 4 10 10

fullscreen

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