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Permanganate titration should be done in an acidic solution because permanganate ion (MnO4-) is most stable in acidic conditions. In acidic solution, permanganate ion is reduced to manganese(II) ions (Mn2+) during the titration. This reaction helps in accurately determining the concentration of the substance being titrated.
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Why does the color of potassium permanganate not disappear when excess of ethanol is added to it?
The color of potassium permanganate does not disappear when excess ethanol is added because ethanol cannot fully reduce potassium permanganate. While ethanol can partially reduce potassium permanganate to form manganese dioxide, the color remains because there is still some potassium permanganate present in the solution.
Why should the magnesium dioxide precipitate be filtered from the potassium permanganate solution?
Filtering the magnesium dioxide precipitate from the potassium permanganate solution helps to separate the solid from the liquid, providing a clear solution free of impurities. This filtration process ensures the purity of the solution and prevents any interference in subsequent reactions or analyses that may be performed with the potassium permanganate solution.
What is titration and what is the purposeof titration?
Titration is a technique used to determine the concentration of a substance in a solution by reacting it with a standardized solution of another substance. The purpose of titration is to accurately measure the quantity of a specific substance in a sample.
What is the control variable in titration?
In a titration experiment, the control variable is the volume of the titrant added to the analyte solution at each step. This volume should be kept consistent throughout the experiment to ensure accurate and reliable results.
An acidic solution has the pH balance of?
It should be between 2-5 in the ph scale if dissolved in water
Why does the color of potassium permanganate not disappear when excess of ethanol is added to it?
The color of potassium permanganate does not disappear when excess ethanol is added because ethanol cannot fully reduce potassium permanganate. While ethanol can partially reduce potassium permanganate to form manganese dioxide, the color remains because there is still some potassium permanganate present in the solution.
Why should the magnesium dioxide precipitate be filtered from the potassium permanganate solution?
Filtering the magnesium dioxide precipitate from the potassium permanganate solution helps to separate the solid from the liquid, providing a clear solution free of impurities. This filtration process ensures the purity of the solution and prevents any interference in subsequent reactions or analyses that may be performed with the potassium permanganate solution.
What is titration and what is the purposeof titration?
Titration is a technique used to determine the concentration of a substance in a solution by reacting it with a standardized solution of another substance. The purpose of titration is to accurately measure the quantity of a specific substance in a sample.
What is the control variable in titration?
In a titration experiment, the control variable is the volume of the titrant added to the analyte solution at each step. This volume should be kept consistent throughout the experiment to ensure accurate and reliable results.
An acidic solution has the pH balance of?
It should be between 2-5 in the ph scale if dissolved in water
How to prepare a 0.2N KMnO4 solution?
Formula weight of KMnO4 is 158.04. The equivalent weight depends on the reaction involved. In acidic media it is (formula weight) /5, in neutral although this is more difficult to control it is the formula weight. Knowing which type it is usually acidic as it is easier, you will need 158.04/5 X 0.2 = 6.32g. Sulfuric acid is usually added in the titration to ensure the correct oxidation reaction is carried out. Also note KMnO4 is not considered a primary standard so you should really filter the solution to remove any MnO2 caused by oxidation of organic impurites in the water you are using, and standardise the solution by titration against say oxalic acid. K
Why pottasium permanganate solution kept for few days?
Potassium permanganate solution is unstable and tends to decompose over time when exposed to light and air. As it decomposes, it loses its effectiveness as an oxidizing agent. It is recommended to prepare a fresh solution when needed to ensure optimal results.
How can pH of a solution be tested?
By dissolving the pH solution a colour change will occur in the solution that should be tested.Compairing the colour of solution to the colours marked on of pH chart we can find out if the solution we tested is of alkaline nature or of acidic nature or neutral.Solutions of pH7are neutral solutions.Solutions below pH7 are acidic solutions and those above pH7 are alkaline solutions.
If you are trying to create a neutral salt from a base by adding an acid but the pH indicator indicates that the solution is now acidic what should be your next step?
add a base to the solution
If ammonia has an acidic solution of ph12 then how many more acidic solution does household bleach has with a ph13?
Household bleach with a pH of 13 is 10 times more basic (alkaline) than ammonia with a pH of 12. This means household bleach is more alkaline, not acidic. If you're looking at it in terms of acidity, bleach is stronger in terms of being basic while ammonia is stronger in terms of being acidic.
Why should enough KHT be added to the KCl-NaCl solution to ensure that some solid remains undissolved after the 20 minute stirring?
Adding enough KHT ensures that a saturated solution is formed, which is necessary to determine the endpoint of the titration accurately. Some solid should remain undissolved after the 20-minute stirring to ensure that all the KCl has reacted with the silver ions before titration begins.
If acidic cleaning solution is splashed in the eye what should be done first?
Rinse the eye with cold water for several minutes.
