Question

which of the following chemical formulas are the reactants?
co₂ and 2h₂o
ch₄ and 2o₂
co₂
ch₄ + 2o₂ —→ co₂ + 2h₂o

Explanation:

In a chemical reaction, reactants are the substances that undergo the reaction and are located on the left - hand side of the arrow in the chemical equation. The given chemical equation is $\ce{CH_{4} + 2O_{2} -> CO_{2} + 2H_{2}O}$. So, we need to identify the substances on the left side of the arrow as reactants.

Answer:

The reactants are $\ce{CH_{4}}$ and $\ce{2O_{2}}$, so the correct option is the one with "CH₄ and 2O₂".