On the first derivative of redox titration curve the end point can be more precisely located.     The volume on the x-axis corresponding to the peak of the curve is the end point of the titration.     The point on volume axis where the curve cuts through zero on the x-axis gives the end point.     The inflexion point/the steeply rising portion corresponds to the volume for the end point of the titration.

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A: A buffer solution is a solution whose pH does not change by adding small amount of acid and base.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.