If the hydrochloric acid is warm, is the following equation correct?

2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

yes, correct.

To determine whether the given equation is correct when hydrochloric acid is warm, we need to consider the conditions under which the reaction occurs.

The equation you provided represents a reaction between hydrochloric acid (HCl) and sodium sulfite (Na2SO3). The products of this reaction are sodium chloride (NaCl), sulfur dioxide gas (SO2), and water (H2O).

Under normal conditions, hydrochloric acid is a colorless liquid. However, when it is warmed, it may undergo certain changes.

To validate the equation, we need to ensure that the reaction is balanced. Let's balance the equation step by step:

2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

Balancing the sodium atoms:
2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

Balancing the chlorine atoms:
2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

Balancing the sulfur atom:
2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

Balancing the oxygen atoms:
2HCl(aq) + Na2SO3 --> 2NaCl(aq) + SO2(g) + H2O(l)

The equation seems to be balanced, with an equal number of atoms on both sides. Therefore, the given equation is correct even if hydrochloric acid is warm.

Please note that the provided information is based solely on the equation and its balancing. If there are additional factors or specific conditions that could affect the validity of this equation when hydrochloric acid is warm, they would need to be taken into consideration.