Give an example of weak monobasic acid.

A weak monobasic acid is an acid that can donate only one proton (H+) per molecule when it dissociates in water, and it does so to a limited extent. One example of a weak monobasic acid is acetic acid, which is also known as ethanoic acid. Its chemical formula is CH3COOH. When acetic acid is dissolved in water, it partially dissociates into hydrogen ions (H+) and acetate ions (CH3COO-), but the dissociation is not complete, making it a weak acid.

Here's the chemical equation for the dissociation of acetic acid in water:

CH3COOH (acetic acid) ⇌ H+ (hydrogen ion) + CH3COO- (acetate ion)

The equilibrium lies to the left, indicating that only a fraction of the acetic acid molecules donate a proton to form hydrogen ions in solution, making it a weak acid.