which statement best describes the equation caco₃ + 2hcl → cacl₂ + co₂ + h₂o?\ncaco₃ is a reactant; it is…

which statement best describes the equation caco₃ + 2hcl → cacl₂ + co₂ + h₂o?\ncaco₃ is a reactant; it is present before the reaction occurs.\ncacl₂ is a reactant; it is present before the reaction occurs.\nco₂ is a reactant because it is most likely a gas.\nh₂o is a reactant because it is most likely a liquid.

which statement best describes the equation caco₃ + 2hcl → cacl₂ + co₂ + h₂o?\ncaco₃ is a reactant; it is present before the reaction occurs.\ncacl₂ is a reactant; it is present before the reaction occurs.\nco₂ is a reactant because it is most likely a gas.\nh₂o is a reactant because it is most likely a liquid.

Answer

Brief Explanations:

In a chemical equation, reactants are on the left - hand side and products are on the right - hand side. In the equation $\mathrm{CaCO}{3}+2\mathrm{HCl}\rightarrow\mathrm{CaCl}{2}+\mathrm{CO}{2}+\mathrm{H}{2}\mathrm{O}$, $\mathrm{CaCO}{3}$ and $\mathrm{HCl}$ are reactants as they are present before the reaction occurs. $\mathrm{CaCl}{2}$, $\mathrm{CO}{2}$ and $\mathrm{H}{2}\mathrm{O}$ are products.

Answer:

$\mathrm{CaCO}_{3}$ is a reactant; it is present before the reaction occurs.