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Why is sulphuric acid added to oxalic acid during the titration of potassium permanganate?
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What type of indicator is used during potassium permanganate titration?
Usually there is no indicator needed in potassium permanganate titrations as there will be an excess of manganate ions in the conical flask, turning the solution from colourless to pale pink.
Why is there colour change in the reaction between oxalic acid and potassium permanganate?
The dark purple color of permanganate fades because during the reaction permanganate is reduced to manganese cations and water. The other reactants and products are not strongly colored.
Why sulfuric acid is used in Redox titration instead of HCl?
Because sulphuric acid is non volatile and its sulphate ion is not interfering during the titration process while HCl is a volatile substance and its chloride ion interfere in the reaction as a reducing agent.
What is the function of sulfuric acid in redox titration?
Sulphuric Acid (H2SO4) is used in the redox titration process because it provides the H(+) ions necessary for the reaction to occur more quickly whilst the sulphate(-) ions barely react during the reaction.
Reaction of formaldehyde with potassium permanganate?
Benzaldehyde reacts with pottasium permanganate to generate benzoic acid (oxidation). Basic cnditions are required for the action of pottasium permanganate so sodium carbonate is used. But this gives sodium salt of benzoic acid which is soluble in water. To retrieve benzoic acid which is insoluble in water we use HCl.
What is the endpoint of a titration?
during a titration when a titrant completely furnished the sample then this is the end point of titration.
Why you heat oxalic acid and sulphuric acid solution?
During redox titration oxalic acid is a covalent compound and can not accept oxygen easily from an oxidizing agent so heat is necessary to break down the covalent bonding.
What is the reason of heating solution during redox titration?
This is far to be a rule for this titration.
Why the titration flask need to be shake during titration?
so that the solutions mix properly
What is a potentiometric titration?
A potentiometric titration is one in which the end-point is detected by measuring the change in potential of a suitable electrode during the titration.
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.
What is the purpose for using phenolphthalein for an acid base titration?
It's the colour indicator you watch for during the titration.
