The sum of the coefficients in the balanced chemical equation for combustion of acetone C3H6O in air is 11
explanation
that is; C3H6O + 4O2 → 3CO2 +3H2O
coefficient is the number in front of the chemical formula
the sum of coefficient is therefore= 1 ( in front of C3H6O) + 4 ( in front of O2) + 3 ( in front of CO2) + 3 ( in front of H2O) = 11
The sum of the coefficients in the balanced chemical equation is 11
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
Thus, we can obtain the sum of the coefficients in the balanced equation by simply balancing the equation:
C₃H₆O + O₂ —> CO₂ + H₂O
There are 3 atoms of C on the left side and 1 atom on the right side. It can be balance by writing 3 before CO₂ as shown below:
C₃H₆O + O₂ —> 3CO₂ + H₂O
There are 6 atoms of H on the left side and 2 atoms on the right side. It can be balance by writing 3 before H₂O as shown below:
C₃H₆O + O₂ —> 3CO₂ + 3H₂O
There are 3 atoms of O on the left side and 9 atoms on the right side. It can be balance by writing 4 before O₂ as shown below:
C₃H₆O + 4O₂ —> 3CO₂ + 3H₂O
Thus, the equation is balanced
1C₃H₆O + 4O₂ —> 3CO₂ + 3H₂O
Coefficients = 1, 4, 3, 3
Sum of coefficients = 1 + 4 + 3 + 3
Sum of coefficients = 11
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