Single Answer MCQ
Q-00004425
In the reaction 2H2 + O2 → 2H2O, what is the role of the coefficients?
1
They denote the temperature
2
They represent the physical states
3
They balance the number of atoms
4
They indicate the color change
Answer and Solution
Answer
C. They balance the number of atoms
Solution:
Coefficients balance the number of atoms of each element in a chemical equation. In this case, they ensure that there are equal numbers of hydrogen and oxygen atoms before and after the reaction.
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