How to Write a Lab Report About Titration | Sciencing

 

titration lab report example

Let us examine an example of laboratory report that may be helpful as the demonstration of basic principles of acid-base titration. During this assignment, you must perform standardization of strong acid, for example, hydrochloric acid, using a standard mixture of sodium carbonate. Angelica Rodriguez 05/14/13 Period 4 Acid-Base Crime Scene Titration Introduction: Titration is a lab technique used to determine the exact concentration of an acid or base. In this laboratory experiment, the crime scene analyst will use their knowledge of acids and bases to determine the concentration of each acid found as evidence in a murder/5(16). Table 2. Volume data from the titration of unknown monoprotic acid using standardized NaOH solution. The data are obtained from the buret readings. * Trial 1 was preceded with the scout titration (trial 0). The results from the scout titration are not included in this table since they are not quantitatively accurate.


Acid Base Titration Lab Report: Key Points of Experimental Process


Objectives: 1. Titration lab report example determine the concentration of acid using titration. Skills of titration techniques.

Apparatus: 1. Retord stand 8. White tile 9. Stopwatch Pipette bulb Chemicals: 1. HCl solution 2. H2SO4 solution 4. Distilled water titration lab report example. Acid—base titrations can also be used to find percent purity of chemicals. When a weak acid reacts with a weak base, titration lab report example, the equivalence point solution will be basic if the base is stronger and acidic if the acid is stronger.

If both are of equal strength, then the equivalence pH will be neutral. However, titration lab report example, weak acids are not often titrated against weak bases because the colour change shown with the titration lab report example is often quick, and therefore very difficult for the observer to see the change of colour. The point at which the indicator changes colour is called the end point.

A suitable indicator should be chosen, preferably one that will experience a change in colour an end point close to the equivalence point of the reaction. First, the burette should be rinsed with the standard solution, the pipette with the unknown solution, and the conical flask with distilled water.

Secondly, a known volume of the unknown concentration solution should be taken with the pipette and placed into the conical flask, along with a small amount of the indicator chosen. The known solution should then be allowed out of the burette, into the conical flask. At this stage we want a rough estimate of the amount of this solution it took to neutralize the unknown solution.

The solution should be let out of the burette until the indicator changes colour and the value on the burette should be recorded. This is the first or rough titre and should be discluded from any calculations.

At least three more titrations should be performed, this time more accurately, taking into account roughly where the end point will occur. The initial and final readings on the burette prior to starting the titration and at the end point, respectively should be recorded. Subtracting the initial volume from the final volume will yield the amount of titrant used to reach the endpoint. The end point is reached when the indicator just changes color permanently. This is best achieved by washing a hanging drop from the tip of the burette into the flask right at the end of the titration to achieve a drop that is titration lab report example in volume than what can usually be achieved by just dripping solution off the burette.

If the base is off the scale, i. On the other hand, if the acid is off the scale, i. The acid-base indicator indicates the endpoint of the titration by changing colour.

The endpoint and the equivalence point are not exactly the same because the equivalence point is determined by the stoichiometry of the reaction while the endpoint is just the colour change from the indicator. Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of 8.

Common indicators, their colours, and the pH range in which they change colour are given in the table above. The solution is transferred into a beaker and labelled as HX. The burette is rinsed with 10mL of 0. Begin to run the base solution from burette into the flask containing acid solution and phenolphthalein.

A pink colour will develop which quickly disappears when solution is swirled. As more bases is added, titration lab report example, the pink solution will remain for a longer time, titration lab report example, when this occurs slow the addition of base so that only one or? The flask is swirled on each addition, titration lab report example.

At the end point, one drop of base solution will turn the entire content of the flask to light pink. At this point, the final volume of the base is recorded to the nearest 0. The experiment is titration lab report example 2 times to ensure the reliability of the experiment. All the conical flask is washed and rinsed with the unknown H2SO4.

All procedure are repeated using the unknown H2SO4. Let us create the best one for you! What is your topic? By clicking "SEND", you agree to our terms of service and privacy policy. We'll occasionally send you account related and promo emails. Eric from Graduateway Hi there, would you like to get an essay? Let me help you.

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Lab Report Acid Base Titration Essay Example | Graduateway

 

titration lab report example

 

But before you either start whining or yawning, let me appease you by saying that this article will surely help you in one activity and subject—writing a chemistry report. If, by any chance, that is really the subject that you’re struggling in, feel free to check out our . Get help on 【 Lab Report Acid Base Titration Essay 】 on Graduateway Huge assortment of FREE essays & assignments The best writers!Author: Alex. Let us examine an example of laboratory report that may be helpful as the demonstration of basic principles of acid-base titration. During this assignment, you must perform standardization of strong acid, for example, hydrochloric acid, using a standard mixture of sodium carbonate.