Question

Is a solution of a weak acid considered a buffer solution?

Answer 1

No....

Explanation:

`pH=pK_a+log_10{[[A^-]]/[[HA]]}`

A buffer solution is composed of a weak acid, AND its conjugate base in `"APPRECIABLE CONCENTRATIONS"`, and it acts to prevent GROSS changes in `pH`. See this old answer....

When a weak acid is titrated with a strong base, we inevitably get mixtures of weak acid with its conjugate base, and so this section of the titration curve is known as the `"buffer region"` ..

Biological systems are extensively buffered, including our own blood, and stomach acids....