What is the conductometric titration of weak acid and weak base?

Weak Acid with a Weak Base: The nature of curve before the equivalence point is similar to the curve obtained by titrating weak acid against strong base. After the equivalence point, conductance virtually remains same as the weak base which is being added is feebly ionized and, therefore, is not much conducting (Fig.

Which kind of graph you can expect for the conductometric titration of a strong acid and strong base?

⚛ In an acid-base conductometric titration the changes in the conductivity of the solution, its conductance, is measured as the base is gradually added to the acid (or as acid is added to base). ⚛ The results of the acid-base conductometric titration are graphed resulting in conductance curves.

Why does the conductance initially decrease in conductometric titration curves for weak acid vs strong base?

Initially the addition of alkali causes not only the replacement of `H^(+)` by `Na^(+)` but also suppresses the dissociation of acetic acid due to the common ion `Ac^(-)` and thus the conductance of the solution decreases in the beginning.

What is conductometric titration curve?

The conductometric titration curve is a plot of the measured conductance or conductivity values as a function of the volume of the NaOH solution added. The titration curve can be used to graphically determine the equivalence point.

What happens when a weak acid is titrated with a strong base?

The titration of a weak acid with a strong base involves the direct transfer of protons from the weak acid to the hydoxide ion. The reaction of the weak acid, acetic acid, with a strong base, NaOH, can be seen below. In the reaction the acid and base react in a one to one ratio.

Which indicator is used for weak acid-strong base?

Choice of Indicators

Types of titration Indicators
Strong acid-strong base Phenolphthalein is usually preferred because of its more easily seen colour change.
Weak acid-strong base Phenolphthalein is used and changes sharply at the equivalence point and would be a good choice.

What will happen at the equivalence point for strong acid and strong base conductometric titration?

After the equivalence point of a conductometric titration process is reached, the further addition of the titrant creates an excess of ions. This excess results in an increase in the conductivity of the solution.

What is the basic principle of conductometric titration?

The conductometric titration works on the principle that the difference in the volume of ions leads to a difference in the conductivity of both the ions. The graph is the sole basis of the calculation of the equivalence point. For each electrolyte used, a different graph must be plotted.

What is the suitable indicator for titration of strong acid and strong base?

phenolphthalein indicator
A strong acid-strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10.