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The reaction has to be carried out at neutral conditions because in acid the chromate indicator concentration decreases due to the reaction with the H+ ions, forming HCrO4-. It cannot be in too basic of a solution (greater than 10.5) because then silver hydroxide will form before the silver chromate can form.
Mohr titration is typically performed at neutral pH because the indicator used, potassium chromate, changes color around a pH of 7. At neutral pH, the endpoint of the titration can be accurately detected, leading to more precise results. Additionally, the formation of insoluble silver chromate precipitate is favored at neutral pH, aiding in visually determining the endpoint.
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Why is it that mohr's method of titration for the determination of halide must be performed in neutral?
Performing Mohr's method of titration for the determination of halide ions in a neutral solution is important because it ensures that the chromate indicator used in the titration does not react with any acidic or basic substances present, which could interfere with the accuracy of the results. Keeping the solution neutral helps to maintain the stability and sensitivity of the indicator, allowing for a more reliable determination of the halide concentration.
What requirements must be satisfied for a reaction to be feasible for titration?
For a reaction to be feasible for titration, it must be a quantitative reaction, meaning it goes to completion with a known stoichiometry. The reaction must also be fast enough to proceed to completion within a reasonable time frame. Additionally, the reaction should have a distinct endpoint to indicate completion.
Why must have gross reading in titration process?
to get rough volume....
Why must you rinse the titration flask with distilled water before further use?
Rinsing the titration flask with distilled water helps to remove any residue or impurities from the previous titration, which could affect the accuracy of the next titration. It ensures that the flask is clean and free of any substances that could interfere with the reaction being studied. This step is crucial for obtaining precise and reliable titration results.
Why must the titration be carried quickly and diffuse?
To minimize the chance of side reactions, errors, or contamination from the surroundings. A slow titration could result in inaccurate results due to reactions with air or impurities. Rapid titration helps to ensure more precise and reliable measurements.
Why is it that mohr's method of titration for the determination of halide must be performed in neutral?
Performing Mohr's method of titration for the determination of halide ions in a neutral solution is important because it ensures that the chromate indicator used in the titration does not react with any acidic or basic substances present, which could interfere with the accuracy of the results. Keeping the solution neutral helps to maintain the stability and sensitivity of the indicator, allowing for a more reliable determination of the halide concentration.
What are the limits for determination of chloride by the Mohr method?
The Mohr method for determining chloride ions has a detection limit of around 10-20 ppm and a quantitative limit of around 30-40 ppm. These limits can vary depending on the specific conditions and equipment used in the analysis.
Can chloride and bromide simultaneously determine by Mohr method?
I want to assmue the the readers of this answer have know the details theory and calculations about Mohr method if not u can refer to Any analytical text for reference. Well, Bromide and Chloride can not be determine simultaneously in a sample using Mohr method , the reason be that the indicator use for each of them is different. and there will be problem in the procedure if ones try to determine both simultaneously. To determine Chloride Ion, Ammonium or Potassium Thiocynate is used as indicator and the sample must be neutral or slightly acidic. while Eosin indicator is use for the determination of Bromide Ion and the same neutral solution is prefer for this purpose, the solution must be adjusted to neutral either by adding small amount of Nitric acid or by adding small amount of carbonate as the case maybe. But, in the determination of each of them Silver Nitrate is use for the titration of both and this is the similarity they shared and the experimental procedure is quite the same. Olajire Mojeed
What requirements must be satisfied for a reaction to be feasible for titration?
For a reaction to be feasible for titration, it must be a quantitative reaction, meaning it goes to completion with a known stoichiometry. The reaction must also be fast enough to proceed to completion within a reasonable time frame. Additionally, the reaction should have a distinct endpoint to indicate completion.
Why must have gross reading in titration process?
to get rough volume....
Why the oxidation reduction titration must be in basic medium?
It is not mandatory; acids are also titrated.
Why must you rinse the titration flask with distilled water before further use?
Rinsing the titration flask with distilled water helps to remove any residue or impurities from the previous titration, which could affect the accuracy of the next titration. It ensures that the flask is clean and free of any substances that could interfere with the reaction being studied. This step is crucial for obtaining precise and reliable titration results.
Why must the titration be carried quickly and diffuse?
To minimize the chance of side reactions, errors, or contamination from the surroundings. A slow titration could result in inaccurate results due to reactions with air or impurities. Rapid titration helps to ensure more precise and reliable measurements.
What must a neutral atom with four protons contain?
A neutral atom must contain an equal number of electrons because it is a neutral atom.
Why does an indicator require precision in the titration process?
Precision in the titration process is important for accurate determination of the end point. An indicator must change color very close to the equivalence point to provide a clear signal for the endpoint of the titration. If the indicator is not precise enough, it can lead to errors in determining the correct endpoint of the titration, affecting the accuracy of the results obtained.
Why fuse is not used on the path of neutral?
Neutral must never be cut off.
Why must silver nitrate be used in excess in precipitation titration?
Silver nitrate must be used in excess in precipitation titration because it ensures that all the chloride ions in the solution have reacted with the silver ions to form a precipitate (silver chloride). This ensures the endpoint of the titration is reached accurately, allowing for a precise determination of the concentration of chloride ions in the solution.
