The residue obtained when the products of a neutralization reaction are heated depends on the specific acid and base involved in the reaction. However, in general, the residue will be a salt and possibly water.

Neutralization reaction:

Acid + Base → Salt + Water

Heating the Products:

* Salt: Most salts are stable and will remain as a solid residue.

* Water: Water will evaporate, leaving behind the salt.

Examples:

* Hydrochloric acid (HCl) and Sodium hydroxide (NaOH):

* HCl + NaOH → NaCl + H₂O

* Heating the products will leave behind solid sodium chloride (NaCl) salt.

* Sulfuric acid (H₂SO₄) and Calcium hydroxide (Ca(OH)₂):

* H₂SO₄ + Ca(OH)₂ → CaSO₄ + 2H₂O

* Heating the products will leave behind solid calcium sulfate (CaSO₄) salt.

Exceptions:

Some salts may decompose when heated, leading to different residues. For example, some carbonates decompose to oxides and carbon dioxide upon heating.

Therefore, the specific residue obtained after heating the products of a neutralization reaction will vary depending on the nature of the acid and base involved.