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Why do you use ethanolic NaOH instead of aq NaOH in titration?
Noorhani
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Can you use indicator other than phenolphthalein in the titration of NaOH?
Yes you can use methyl red, methyl orange, bromophenol blue and other indicators instead of phenolphthalein in the acid-base titration of NaOH.
Why you use oxalate potassium in formol titration?
In formol titration, amino acids with formaldehyde are titrated with NaOH to measure the amount of amino acids in the solution. Potassium is also necessary for this titration and is supplied by using potassium oxalate. If calcium is present, it will react with the NaOH to form Ca(OH)2. This will make it appear to need more of the NaOH solution (and overestimate the titration). Potassium oxalate will chelate the calcium, and prevent it from reacting (forming calcium oxalate).
What is indirect titration?
indirect titration is a process where in the analyte did not react with the titrant, directly,instead..they are connected with the use of iodine.
Why use ethanolic KOH?
ethanolic KOH can precipitate the impurities in solution
When to use back-titration instead of direct titration?
When you have passed the tipping point and the color indicator turns from it's color to the clear color of the original solution. Then you back titrate to color again.
Can you use indicator other than phenolphthalein in the titration of NaOH?
Yes you can use methyl red, methyl orange, bromophenol blue and other indicators instead of phenolphthalein in the acid-base titration of NaOH.
Why you use oxalate potassium in formol titration?
In formol titration, amino acids with formaldehyde are titrated with NaOH to measure the amount of amino acids in the solution. Potassium is also necessary for this titration and is supplied by using potassium oxalate. If calcium is present, it will react with the NaOH to form Ca(OH)2. This will make it appear to need more of the NaOH solution (and overestimate the titration). Potassium oxalate will chelate the calcium, and prevent it from reacting (forming calcium oxalate).
What is indirect titration?
indirect titration is a process where in the analyte did not react with the titrant, directly,instead..they are connected with the use of iodine.
Why use ethanolic KOH?
ethanolic KOH can precipitate the impurities in solution
How do you perform analytical method to measure HF content without the use of thorium nitrate?
Titration with NaOH, KOH, NH4OH, etc.
When to use back-titration instead of direct titration?
When you have passed the tipping point and the color indicator turns from it's color to the clear color of the original solution. Then you back titrate to color again.
How do you calculate the concentration of 10mL of a weak acid in a titration where the strong base has a molarity of 0.09994M and the equivalence volume is 21.20mL?
you have to use titration... http://www.avogadro.co.uk/miscellany/titration/titreset.htm or you can use the formula you have to use titration... http://www.avogadro.co.uk/miscellany/titration/titreset.htm or you can use the formula
Why is titration method applicable in aspirin analysis?
When I am using back titration and direct titration as my two methods for determining the purity of aspirin tablets. doesn't the direct titration not take into consideration of the excess sodium hydroxide added to the aspirin?In both these titrations when I reach the end-point it turns pink but I kept these solution the next day and they turned back to colourless. Is this meant to happen and what chemical reaction has happened here?I titrated this again with more sodium hydroxide till the end-point then added this to the overall amount of NaOH i added in the flask.Is the only difference between back titration and direct titration not addding the HCl at the end to determine the excess amount of NaOH?Are there any methods for direct titration.Would really appreciate any help.The best you can obtain is an end point lasting 20-30 seconds. Any excess base will slowly hydrolyze the ester and liberate acetate ion from the act's because aspirin is such a weak acid that it reacts slowly with the NaOH, making it difficult to accurately get a good endpoint in a reasonable time.With back titration, you react with an excess of NaOH (known amount), heat it to make the reaction go to completion quickly, then use HCl to determine the amount of NaOH that is remaining. This reaction will go quickly, and is much easier to measure.elylsalicylic acid,aspirin.
Difference between precipitation titration and complexometric titration?
During a precipitation titration an insoluble precipitate is formed.Complexometric titration is a type of volumetry which use as titrants EDTA or other similar reagents.
Companies that use titration?
RSPCA
Determination of magnesium in tap water?
u can use titration with EDTA or use flame atomic absorption.. but titration with EDTA is the easiest
How much NaOH do you use to lower pH?
You dont - adding NaOH increases pH.
