Which of the following is a precautionary to take when using a burette?

Which of the following is a precautionary to take when using a burette?

Always rinse a burette before use by rinsing the burette and burette tap (stopcock) with the liquid that is going to be used before use. This will remove possible contaminants or dilutants. Fill the burette, slowly towards the end, and allow funnel to drain empty before adding more, to prevent overflowing.

How can you avoid titration errors?

Acid Base Titration Sources of Error Improvements

1. Check the calibration of the balance.
2. Verify that the primary standard is properly dried.
3. Verify the precision of the glassware.
4. Use sufficient quantities of analyte and titrant.
5. Realize the limitations of the equipment.

What is titration process?

A titration is defined as ‘the process of determining the quantity of a substance A by adding measured increments of substance B, the titrant, with which it reacts until exact chemical equivalence is achieved (the equivalence point)’.

What precautions must we take when working with acids bases and indicator solutions?

Personal protective equipment:

• Face protection, such as a face shield, is required when working with large volumes of liquid acids and bases.
• An apron or disposable gown must be worn when working with large volumes of liquid acids and bases.
• Acid-resistant gloves must be worn when handling acids and bases.

What precautions do we have to take during Volumetric analysis?

Never close the pipette with the’ thumb. Keep the lower end always dipping in the liquid while sucking the liquid. Never pipette out hot solutions or corrosive solutions. Do not blow out the last drop of the solution from the jet end.

How do you ensure a titration is accurate?

Terms in this set (9)

1. Meniscus at eye level. To avoid parallax error.
2. White tile. To see end point clearer.
3. Remove funnel before titrating. Increases the vol making the titre smaller.
4. Dropwise addition.
5. No bubbles in pipette & burette at the tip.
6. Swirling during titration.
7. Few drops of indicator.
8. Repeat the titration.

What can go wrong during titration?

Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. Care must be taken as the solution of the known concentration is introduced into a specific volume of the unknown through laboratory glassware such as a burette or pipette.

Why do we need titration?

The purpose of titration is to determine an unknown concentration in a sample using an analytical method. When the titration reaches an endpoint, the amount of titrant is recorded and used to calculate the unknown concentration.

What is the purpose of doing titration?

The concentration of a basic solution can be determined by titrating it with a volume of a standard acid solution (of known concentration) required to neutralize it. The purpose of the titration is the detection of the equivalence point, the point at which chemically equivalent amounts of the reactants have been mixed.

What are the precautions to be taken during titration of solution?

1)Usually an air bubble is present in the nozzle of the burette,it must be removed before taking the initial reading. 2)Their should not be any leakage from the burette during titration. 4)Always read lower meniscus in case of colourless solution and upper meniscus in case of coloured solutions.

How to avoid leakage from burette during titration?

2)Their should not be any leakage from the burette during titration. 3)Keep your eye in level with the liquid surface while taking the burette reading or while reading the pipette or measuring flask etc. 4)Always read lower meniscus in case of colourless solution and upper meniscus in case of coloured solutions.

What are the precautions to be taken while using a burette?

1)Usually an air bubble is present in the nozzle of the burette,it must be removed before taking the initial reading. 2)Their should not be any leakage from the burette during titration. 3)Keep your eye in level with the liquid surface while taking the burette reading or while reading the pipette or measuring flask etc.

What are the guidelines for titration of EDTA?

No tinge of reddish hue should remain at the endpoint, the solution should be clear blue. Titration should be performed slowly near the endpoint for detection of sharp and correct endpoints. EDTA can be used as chelating titrant (titrant can be defined as the solution whose concentration is known in the titration) in many ways.