Final Answer:
A buffer curve is a plot of pH against the amount of acid or base added to a buffer solution. The correct answer is c) Buffer curve.
Step-by-step explanation:
A buffer curve is a plot of pH against the amount of acid or base added to a buffer solution. It shows how the pH of the buffer solution changes as acid or base is added.
The buffer curve is typically flat over a range of acid or base added, indicating that the buffer solution is able to resist changes in pH.
The middle of the curve is flat, known as the buffer zone. This is because the addition of base or acid has little effect on the pH of the solution. When a small amount of acid or base is added to the buffer system, the curve will increase dramatically once it exits the buffer region.
The correct answer is c) Buffer curve.