Question

For the following question(s), refer to the following reaction, which is not yet balanced. CH4(g)+ O2 (g)→ CO2 (g)+ H2O(g) When the above equation is balanced, what is the best coefficient for water?

Answer 1

Water will have the coefficient 2.

Explanation:

To balance the chemical equation the number of atoms of each element entering the reaction have to be equal to the number of atoms of each element leaving the reaction, in order to conserve the mass.

We have the following balanced chemical equation:

CH₄ (g)+ 2 O₂ (g)→ CO₂ (g)+ 2 H₂O (g)

The coefficient of water (H₂O) is the number you may be found in from of the molecular formula, which is number 2.

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Answer 2

Answer:

$\huge \boxed{\mathrm{2}}$

$\rule[225]{225}{2}$

Explanation:

$\sf CH_4+ O_2 \Rightarrow CO_2 + H_2O$

Balancing the Hydrogen atoms on the right side,

$\sf CH_4+ O_2 \Rightarrow CO_2 +2 H_2O$

Balancing the Oxygen atoms on the left side,

$\sf CH_4+ 2O_2 \Rightarrow CO_2 +2 H_2O$

$\rule[225]{225}{2}$