Answer:
1.25 M HCO₃⁻ / 1.25 M CO₃²⁻
Explanation:
Buffer capacity refers to the amount of a strong acid or base required per liter of the buffer to change its pH by one. This amount is directly related to the concentration of the conjugate acid-base pair in the buffer since the buffer pair neutralizes the strong acid or base.
Thus, the highest buffer capacity is found in the solution that has the highest concentration of the conjugate acid-base pair, which is 1.25 M HCO₃⁻ / 1.25 M CO₃²⁻ .
1.25 M HCO3- / 1.25 M CO32 have the highest buffer capacity.
Buffer capacity is represented by the symbol (β) and it is the moles of an acid or base that is needed to resist or change the pH of a solution by 1, It is divided by the pH change and the volume of buffer in liter. It has no unit.
A buffer help to resists changes in pH which is as a result of the addition of an acid or base.
Therefore, 1.25 M HCO3- / 1.25 M CO32 have the highest buffer capacity because the higher the buffer capacity in solution the higher the acid or base concentration.
Learn more about Buffer capacity from the link below.
https://brainly.com/question/491693
