Under the assumption that there is no degradation in solution, a weak acid or weak base could be used to create a buffer solution. As a buffer solution, it preserves a certain reaction's or process's stable (rm pH) range.
When a little bit of acid or base is added to the buffer solution, it can neutralize the solution. A buffer solution should satisfy these two requirements: Strong base or weak acid - A weak base or acid should be the main ingredients in a buffer.
A weak acid and its conjugate base, or vice versa, are combined to form an aqueous solution known as a buffer solution (more specifically, pH buffer or hydrogen ion buffer). A little bit of a weak acid or base applied to it barely affects its pH.
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