What does a sharp end point mean?

If you say that someone is at the sharp end of a particular activity or type of work, you mean that they are involved in the most difficult or dangerous aspects of it. [mainly British]

Why is there such a sharp slope as the equivalence point approaches on your titration graph?

Near the equivalence point, a change of a factor of 10 occurs very quickly, which is why the graph is extremely steep at this point. As the hydronium ion concentration becomes very low, it will again take a lot of base to increase the hydroxide ion concentration by 10 fold to change the pH significantly.

What factors affect end point sharpness in an acid base titration?

1. The concentration of reactants: as the concentrations of reactants are increased, the break at the equivalence point becomes sharper. 2. The value of the equilibrium constant: as the equilibrium constant becomes larger, the break also becomes sharper.

Why does an acid base titration curve have an abrupt change at the equivalence point?

Very near the equivalence point, a small excess of acid becomes a small excess of base with the addition of a few more drops, so the pH abruptly changes. The equivalence point is the centre of this change, where the curve is the most vertical.

What is the end point on a titration curve?

The point at which the indicator changes color is called the endpoint. So the addition of an indicator to the analyte solution helps us to visually spot the equivalence point in an acid-base titration. Endpoint: refers to the point at which the indicator changes color in an acid-base titration.

Where is the end point on a titration curve?

Indicators are specific to the reaction being analyzed. The endpoint is the point in the titration where the indicator changes color and the equivalence point is the point in the titration when the stoichiometric amount of titrant has been added and the moles of acid and base are equal.

Why there is a sharp increase in pH of the solution at the end point of titration in the experiment of determination of dissociation const of ACOH using pH meter?

As the equivalence point is approached, the concentration of unreacted HA becomes progressively smaller so that successive increments of NaOH neutralize a greater fraction of the HA remaining. This produces a large change in the [HA]/[A–] ratio and, therefore, in the pH of the solution.

What happens to the conductivity during the titration?

The principle of conductometric titration is based on the fact that during the titration, one of the ions is replaced by the other and invariably these two ions differ in the ionic conductivity with the result that conductivity of the solution varies during the course of titration.

Which solute would provide the sharper end point in a titration with 0.10 M?

(d) 0.10 M salicylic acid or 0.10 M acetic acid? Here, titration is carried out by using strong acid , thus the sharper end point is provided by the analyte which has a lower value. The lower the value, the stronger will be the acid, and this results in the sharpness in the end point.

What variables can cause the pH range of an indicator to shift?

The pH interval over which a given indicator exhibits a color change is influenced by * temperature, * the ionic strength of the medium, and * the presence of organic solvents and colloidal particles. Some of these effects can cause the transition range to shift by one or more pH units.