CHE-029L: Preparation and Standardization of 0.1 N Sulfuric Acid

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What is the purpose of preparing and standardizing 0.1 N sulfuric acid in this activity?

To demonstrate the process of making sulfuric acid
To use in the determination of the volume of a solution of known concentration required to react with a given substance (correct)
To learn about the properties of sulfuric acid
To understand the principles of acid-base titrations

Why is it important to standardize solutions of known concentration?

To ensure accurate and reliable experimental results (correct)
To avoid contamination of the solutions
To save time in the laboratory
To reduce the cost of chemical reagents

What is the main purpose of volumetric analysis (titrimetric analysis)?

To analyze the physical properties of substances
To determine the volume of a solution of known concentration required to react with a given substance (correct)
To identify unknown substances in a sample
To measure the weight of a given substance

Which piece of laboratory equipment is NOT essential for preparing and standardizing 0.1 N sulfuric acid?

Iron stand (A) Signup and view all the answers

What is the purpose of using methyl red T.S. in the preparation and standardization of 0.1 N sulfuric acid?

To indicate the endpoint of the acid-base titration (A) Signup and view all the answers

What is the purpose of standardizing a solution?

To determine the unknown concentration of a substance within a solution (C) Signup and view all the answers

What is the key product of a neutralization reaction in aqueous solutions?

Salt and water (A) Signup and view all the answers

In which type of titration is the endpoint detected by adding the prepared acid with constant stirring until the solution becomes faintly pink?

Direct titration (A) Signup and view all the answers

What is the purpose of adding methyl red T.S. in the standardization procedure?

To indicate the endpoint of the titration (B) Signup and view all the answers

What must be ensured when preparing the 0.1 N Sulfuric acid solution?

Reaction must be complete (B) Signup and view all the answers

What is the purpose of using an aspirator pump in the preparation and standardization of 0.1 N sulfuric acid?

To create a vacuum for precise measurement of the acid volume (B) Signup and view all the answers

Why is it important to use a green or amber colored glass bottle for storing the prepared 0.1 N sulfuric acid?

To prevent exposure to light which can affect the acid concentration (C) Signup and view all the answers

What role does sodium carbonate anhydrous play in the standardization of 0.1 N sulfuric acid?

It provides a source of carbonate ions for the acid-base reaction (D) Signup and view all the answers

What is the main function of methyl red T.S. in the preparation and standardization process of 0.1 N sulfuric acid?

To monitor the reaction progress by changing color at a specific pH (C) Signup and view all the answers

What is the purpose of using a wire gauze during the preparation and standardization of 0.1 N sulfuric acid?

To support glassware over a heat source for uniform heating (B) Signup and view all the answers

In the standardization procedure, why is it important to heat the solution to boiling and continue the titration?

To ensure complete reaction between the sulfuric acid and sodium carbonate (D) Signup and view all the answers

What is the purpose of adding two drops of methyl red T.S. in the standardization procedure?

To indicate the completion of the titration (B) Signup and view all the answers

Why is it important to use a primary standard anhydrous sodium carbonate in the standardization procedure?

To ensure that the concentration of sodium carbonate is known and consistent (C) Signup and view all the answers

What could be a potential consequence if the acid burette is not mounted on an iron stand or ring stand during titration?

Inaccurate measurement of the volume of acid added (A) Signup and view all the answers

What could happen if the 0.1 N Sulfuric acid solution is not allowed to cool at room temperature after preparation?

The acid may react with atmospheric moisture and lose its strength (A) Signup and view all the answers