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?
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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.
Frequently asked questions
What is the correct answer to this question?
Two
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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