Writing and balancing equations

carbon dioxide gas is evolved, liquid water is produced, and aqueous calcium chloride results when hydrochloride acid is dropped onto limestone (calcium carbonate)

what is the equation for this word problem ?

CaCO3 + 2HCl —> CaCl2 + CO2 + H2O

Explanation:

Option (B) is the correct answer.

Explanation:

Reactants are the species which are present on the left hand side of a chemical equation.

On the other hand, products are the species which are present on the right hand side of a chemical equation.

For example,

Here, NaCl and H_{2}O are the reactants whereas NaOH and HCl are the products.

This also means that products are the new substances which are formed.

Thus, we can conclude that new substances that are present at the end of a reaction accurately describes the products of a reaction.

the one that accurately describes the products of a reaction is : B. new substances that are present at the end of a reaction

For example the process of photosynthesis transform CO2 and other nutrients into O2 and H2O