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Back Titration Concept

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Questions and Answers

What is the purpose of using an indicator in a direct titration?

To act as a catalyst for the reaction

To measure the concentration of the titrant

To ensure the reaction goes to completion

To determine the end point of the reaction (correct)

What is the main advantage of using a primary standard in a titration?

It eliminates the need for an indicator

It allows for a back-titration to be performed

It makes the titration process faster and more efficient

It ensures the titrant concentration is known precisely (correct)

In a back-titration, what is the purpose of the initial reaction between the sample and a known excess of reagent?

To generate a product that can be titrated (correct)

To completely consume the analyte

To eliminate the need for an indicator

To produce a coloured complex

Which of the following is a key characteristic of a substitution reaction in a titration?

The titrant completely replaces the analyte Signup and view all the answers

Which of the following is a key advantage of direct titration over back-titration?

Direct titration is simpler to perform Signup and view all the answers

In a back titration, what is added to the sample?

An excess of the standard solution Signup and view all the answers

What is the purpose of adding an excess of the standard solution in a back titration?

To ensure that the reaction goes to completion Signup and view all the answers

Which of the following is a disadvantage of using a back titration method?

All of the above Signup and view all the answers

Which of the following is a situation where a back titration might be preferred over a direct titration?

All of the above Signup and view all the answers

In a back titration, what is typically determined after the excess standard solution is added to the sample?

The amount of excess standard solution remaining Signup and view all the answers

What is the purpose of using a primary standard in a titration?

To ensure the accuracy of the concentration of the analyte solution Signup and view all the answers

In a back titration, what is the purpose of titrating the excess unreacted standard?

To determine the concentration of the analyte solution Signup and view all the answers

What is the difference between a direct titration and a back titration?

In a direct titration, the analyte is titrated directly, while in a back titration, the excess standard is titrated Signup and view all the answers

What is a substitution reaction in the context of titrations?

A reaction where one reactant is replaced by another in a compound Signup and view all the answers

Why is it important to use a primary standard in a titration?

To ensure the accuracy of the titration results Signup and view all the answers