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The balanced chemical equation for the formation of water from hydrogen and oxygen is \,\(2H_2 + O_2 \rightarrow 2H_2O\). What coefficient is placed before water?

Answer and explanation

Correct answer: Two

The correct answer is two. In \,\(2H_2 + O_2 \rightarrow 2H_2O\), the left side has 4 hydrogen atoms and 2 oxygen atoms. Placing 2 before water gives the right side 4 hydrogen atoms and 2 oxygen atoms as well. A coefficient of 1 would not balance the numbers of hydrogen and oxygen atoms.

Related tags

ScienceClass 10Chemical ReactionsChemical EquationsBalancing EquationsWater Formation

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