Explanation:

Conductometric titration is a common analytical technique used to determine the amount of a substance in a solution by measuring the electrical conductivity of the solution as a function of added titrant. In this technique, a solution of known concentration (the titrant) is slowly added to a solution of unknown concentration (the analyte) until the reaction is complete. The point at which the reaction is complete is known as the endpoint, and it is typically indicated by a sudden change in the conductivity of the solution.

Concentration of Titre:

In order to achieve accurate and precise results in conductometric titration, it is important to ensure that the titre (the solution of known concentration) is always much more concentrated than the solution being titrated. This is because the conductivity of the solution being titrated is directly proportional to the concentration of ions in the solution, and a small error in the measurement of the conductivity can result in a large error in the final result.

Reasons for Concentrated Titre:

There are several reasons why the titre should be more concentrated than the solution being titrated:

1. Sensitivity:
Conductivity measurements are very sensitive to small changes in concentration, so a more concentrated solution will produce a larger change in conductivity for a given change in concentration. This makes it easier to detect the endpoint and reduces the risk of errors due to small changes in the conductivity measurement.

2. Accuracy:
A more concentrated solution also reduces the risk of errors due to dilution. If the titre is too dilute, then even small errors in the measurement of the volume of titrant added can result in significant errors in the final result.

3. Precise Results:
Concentrated titrant gives more precise results because it results in a larger change in conductivity for a given change in concentration.

Conclusion:

In conclusion, the titre should always be more concentrated than the solution being titrated in conductometric titration to ensure accurate and precise results. This is because the conductivity of the solution being titrated is directly proportional to the concentration of ions in the solution, and a small error in the measurement of the conductivity can result in a large error in the final result.