What is Titration and how is it performed – Titration Up

What is Titration and how is it performed – Titration Up

What is titration?

A titration is a technique or a solution of known concentration is used to determine the unknown concentration of a solution. Usually the solution of known concentration or titrant is added from a burette to a known quantity of the analyte, the unknown solution and so the reaction is complete which is indicated by the endpoint.

The accuracy of the results of your titration, with your reflection of the care you took that performing it. When done carefully titrations give very accurate and precise results.

What is Titration and how is it performed – Titration Up

Step by step procedure required for performing a successful titrations

The burette has now been cleaned and prepared as teaches in the previous article. The meniscus is level with any graduation mark on the period between 0-2Ml. The initial reading will be recorded, remembering to do it to two decimal places.

The analyte solution is petted into the conical flask and then a few drops of the indicates that is added, the conical flask is in placed under the burette, when performing the first titration, the solution is delivered at a rapid Pace to get a rough idea of what volume is needed to reach the end point. This is known as a rough saturation and it is not.

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Included in your final results as it is not accurate. However, you still need to record the final volume reading from the burette, the volume of solution delivered as determined by subtracting the final reading with the initial reading, the burette will then be refilled. Initial readings recorded in the solution and the conical flasks prepared in preparation for the next titration. The next hydration will be done carefully to ensure that the endpoints is not missed using the volume recorded during the rough titration. The general procedure is to deliver approximately three-quarters of the volume of titrant recorded From the rough titration at a rapid pace and then at the titrant slowly until the end point, it is even possible to add a drop swell, add another drop.

So on, until an end point, is reached when approaching the endpoint volume, a good habit is to wash the size of the conical flask with distilled water. From a wash bottle. As when swirling, the side of the conical flask will touch the tub and some of the titrant will stick to the walls of the flask. If there is a droplet hanging on the tip of the burette, wash the droplets into the flask using a wash bottle. Especially when approaching the endpoint washing off, the titrant will result in a more accurate and precise results. Once the end point is reached, the final reading is taken and the total volume of titrant delivered is determined by subtracting the final reading from the initial reading titrations are generally done in triplicate, so you will need to perform two more titrations.

To get the precise results, your volume of titrant delivered for the three non refs titrations should be 0.1Ml difference between each titrant volume delivered. If this is not the case, additional titrations will be performed to get precise results. To better observe the color change of the indicator, a plain white piece of paper is placed under the conical flask for right-handed individuals, the burette tap will be handled using your left hand, while the flask is swelled with the right hand. However, the left-handed individuals, the burette tap is handled with the right hand in the flasks swelled using the left hand.

In this case, the left handed individuals will have to reverse the burette to accommodate the titration.

What is Titration and how is it performed – Titration Up

Summarize procedure required for successful titrations

1. If the sample is solid, it is weighted and then dissolved to make up a known volume of solution in a volumetric flask.

2. A pipette is used to measure accurately, a volume of the solution. For example, 10.00Ml this is emptied into a conical flask.

3. A few drops of an indicator may be added to the conical flask, this will show a change of color once we have reached the end points when the titration is complete the following indicators will be used in your practicals.

4. A second solution, is placed in a burette, this is the titrant. This solution contains a chemical that will react with the analytes chemical sample and the conical flask.

5. The solution from the burette is run into the conical flask, the solution is added one drop at a time and swirls to mix the solutions as the endpoint is approached. Eventually a color change shows the correct amount that has been added to react completely with the analytes chemical in the sample.

6. The volume of solution added from the burette is noted, the titration results can then be used to calculate concentration.

Using the following guides ensure that a titration experiments are carried out using the correct techniques that enable you to get precise and accurate results.


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