What do the symbols tell you about the conditions
of the reaction shown to the right? Check all of the
boxes that apply.
- The reaction only goes toward the products.
- The reactant is dissolved in water.
- A gas and a liquid are produced.
- A solid precipitate will form.

H2 CO3 (aq) <=> CO2 (g) + H2O(I)

An irreversible reaction is a chemical reaction that occurs in only one direction, that is, it lasts until one or more of the reactants are completely depleted and therefore the inverse reaction does not occur spontaneously.

On the other hand, a reversible reaction is the chemical reaction in which the products of the reaction are combined again to generate the reagents. This type of reaction is represented by a double arrow. To the right is represented a direct reaction, which occurs simultaneously with an inverse reaction (arrow to the left).

In that case, the double arrow indicates that the reaction is reversible and that the reaction goes to the reagents and products.

The symbol aq indicates that it is an aqueous reagent. This indicates the reagent is dissolved in water.

Like the symbol aq, the symbols g and l indicates that it is the state of aggregation of matter, in this case gas and liquid respectively. Then, a gas and a liquid are produced.

For a precipitate to form, it must be produced as a product. As a gas and a liquid form, a solid precipitate will not form.

Then, the correct answers are:

The reactant is dissolved in water.
A gas and a liquid are produced.