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07-06-2018
Chemistry

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Which of the following coefficients are needed to balance the combustion reaction of ethanol?
655-20-02-00-00_files/i0120000.jpg
a.
2,3,3
c.
2,3,2
b.
4,2,3
d.
3,2,3

Respuesta :

Dejanras Dejanras

16-06-2018

Answer is: d. 3,2,3.

Balanced chemical reaction: CH₃CH₂OH + 3O₂ → 2CO₂ + 3H₂O.
CH₃CH₂OH is ethanol.
O₂ is molecule of oxygen.
CO₂ is carbon(IV) oxide.
H₂O is water.
There are same number of atoms (oxygen, carbon and hydrogen) on both side of balanced chemical reaction:
2 atoms of carbon.
6 atoms of hydrogen.
7 atoms of oxygen.

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