1 Understanding the Chemical Structure of Aspirin Aspirin is one of the most common drugs in the world. 2  It is used to treat pain, and reduce fever. 3  It is also used to reduce blood pressure.4  Although it is used by many peopleâ¦. Understanding the Chemical Structure of Aspirin Aspirin is one of the most common drugs in the world. 2  It is used to treat pain, and reduce fever. 3  It is also used to reduce blood pressure. 4  Although it is used by many peopleâ¦.
A salt is formed when a cation (positive ion) of an acid forms a compound with the anion (negative ion) of a base. The neutralization of a strong acid and a strong base results in a solution with a pH of 7 (neutral pH).
When a double displacement reaction occurs, the cations and anions switch partners, resulting in the formation of water and a new ionic compound (or salt), which is usually soluble. Neutralization reactions are exothermic, and are generally accompanied by a noticeable release of heat.n these reactions one of the products (AD or CB) after the double displacement is in the gaseous state, such as hydrogen sulfide (H2S) or ammonia (NH3). One of the products could also be carbonic acid (H2CO3) or sulfurous acid (H2SO3).