Question

In an equilibrium reaction, the original base has an extra H⁺ after the reaction, so it will act as a/n (acid/base) in the reverse process.

H-A + :B ↔ _____ + _____
A) Acid
B) Base
C) Salt
D) Catalyst

Answer 1

In an acid-base equilibrium reaction, a base that gains an H+ acts as an acid in the reverse reaction. The species involved form a conjugate acid-base pair, with the reaction yielding the conjugate acid and conjugate base.

Step-by-step explanation:

An acid-base reaction is a type of chemical reaction where a proton (H+) is transferred between reactants, typically resulting in the formation of a conjugate acid-base pair.

In the given equilibrium reaction, when the base (:B) gains an H+ ion, it becomes the conjugate acid (HB+). On the other hand, the original acid (H-A) that loses the H+ ion becomes the conjugate base (A-). Therefore, in the reverse reaction, the species that gained an H+ (HB+) will donate it back and act as an acid. The blank spaces in the reaction H-A + :B ↔ _____ + _____ should be filled with the conjugate acid (HB+) and the conjugate base (A-), respectively.

The process of an acid reacting with a base to form a salt and water is known as a neutralization reaction. This is typical when the acid is hydrogen-ion-containing and the base contains hydroxide ions. The strength and stability of the acids and bases involved determine the extent of the reaction and the position of the equilibrium.