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Acid Alkali Indicator Details Strong Strong Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Weak Strong Phenolphthalien pipette acid, and burette alkali (change from colouless to salmon pink when neutralised) Strong Weak Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Acid Alkali Indicator Details Strong Strong Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised) Weak Strong Phenolphthalien pipette acid, and burette alkali (change from colouless to salmon pink when neutralised) Strong Weak Methyl Orange pipette alkali, and burette acid (change from yellow to light pink when neutralised)
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What is difference between external and internal indicators used in titration?
Internal indicators that are used in titration exist in the titration reaction as either a reactant or a product. External indicators is added to the reaction mixture, but does not exist in the reaction.
What is meant by External Indicator used in titration?
Indicators used outside the titration flask are termed as external indicators. A very commonly used external indicator is potassium ferricyanide
Why are external indicators used in titration of estimation of purity of alcohol?
because external indicators are weak acids or bases and alcohol itself being a weak acid will react with it if it is used in vessel with them..... hence the titration is done using external indicators....
Why should a constant amount of indicator be used in a titration?
Indicators are weak acid. Too much will alter the titre
The purpose of an indicator in a titration experiment?
The indicator is used to measure the end point of titration. Methyl red and phenolphthalein are frequently used indicators in acid-base titration. Potassium permanganate can used as a self indicator in redox titrations where applicable.
What is difference between external and internal indicators used in titration?
Internal indicators that are used in titration exist in the titration reaction as either a reactant or a product. External indicators is added to the reaction mixture, but does not exist in the reaction.
What is meant by External Indicator used in titration?
Indicators used outside the titration flask are termed as external indicators. A very commonly used external indicator is potassium ferricyanide
Why are external indicators used in titration of estimation of purity of alcohol?
because external indicators are weak acids or bases and alcohol itself being a weak acid will react with it if it is used in vessel with them..... hence the titration is done using external indicators....
Theory of titration of silver nitrate solution using precipitation and adsorption indicators?
fluorescein can be used as indicator in the titration of silver and chlorided
Why should a constant amount of indicator be used in a titration?
Indicators are weak acid. Too much will alter the titre
The purpose of an indicator in a titration experiment?
The indicator is used to measure the end point of titration. Methyl red and phenolphthalein are frequently used indicators in acid-base titration. Potassium permanganate can used as a self indicator in redox titrations where applicable.
Discussion for acid-base titration experiment?
discussion for the titration of NaOH and HNO3 by using phenolphthalein & methyl orange indicators
What is the color of the end point for the titration of the acid?
A general acid-base titration may not indicate a color change. Therefore an indicator is used. Among the most used indicators are methyl red, methyl orange and bromothymol blue.
Minimum amount constant indicator titration why?
indicators are weak acids. Too much will alter the titre :)
What are the types of indicators used in titration reaction labs?
Indicator ______________Color change ___________pH at end pointMethyl orange____________orange ---> yellow_______ 3.7Litmus__________________ red ---> blue___________ 6.5Bromothylmol blue ________yelow --->blue___________7Phenolphthalein___________Colorless---> pink________9.1
What is double titration?
Double titration is a process were the first titration is used to standardize a titrant and the second titration is used to find the molarity of the unknow solution.
What is the role of adsorption indicators in precipitation titration?
http://PayCope.com/?ref=62519 absorption indicators are responsible for precipitation which shows the end point when a sharp color change of ppt occur
