Where are coefficients placed while balancing a chemical equation?
Answer and explanation
Correct answer: Before the chemical formulae
To balance a chemical equation, coefficients are placed before chemical formulae. For example, in \(2H_2 + O_2 \rightarrow 2H_2O\), 2 is a coefficient and shows the number of molecules. Subscripts inside a formula, such as 2 in \(H_2\), must not be changed because doing so changes the formula and identity of the substance.
Frequently asked questions
What is the correct answer to this question?
Before the chemical formulae
Why is this the correct answer?
To balance a chemical equation, coefficients are placed before chemical formulae. For example, in \(2H_2 + O_2 \rightarrow 2H_2O\), 2 is a coefficient and shows the number of molecules. Subscripts inside a formula, such as 2 in \(H_2\), must not be changed because doing so changes the formula and identity of the substance.
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.
