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K3Fe(CN)6, also known as potassium ferricyanide, is often used as an external indicator in redox titrations because of its distinct color change. It turns from yellow to colorless upon reaction with excess titrant, making it easy to visually detect the endpoint of the titration.
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What is external indicator?
An external indicator is a measure or signal that originates outside of a system or organization but can provide insights or information about its performance, health, or prospects. It can be used to assess the external environment, market conditions, or other factors that may impact the system or organization.
What is meant by External Indicator used in titration?
An external indicator in titration is a substance that is added in small amounts to the analyte solution during titration to signal the endpoint of the reaction. It changes color at or near the equivalence point, making it easier for the observer to detect when the reaction is complete. Common examples of external indicators include phenolphthalein and methyl orange.
Why in titration of kmno4 no indicator is used?
In the titration of KMnO4, no indicator is used because KMnO4 is a self-indicating titrant. It undergoes a color change from purple to colorless (or brown) at the endpoint of the titration, which makes it unnecessary to add an external indicator. The precise endpoint can be easily detected visually, making the use of an indicator redundant.
Why potassium ferricyanide cannot be used as internal indicator?
Potassium ferricyanide cannot be used as an internal indicator because it is an external indicator that does not change color in response to pH changes in a solution. Internal indicators are usually weak organic acids or bases that change color due to ionization changes as the pH of the solution shifts.
Which type of level indicator is used in chlorine storage tank?
A common type of level indicator used in chlorine storage tanks is a magnetic level indicator. This type of indicator uses a float with a magnetic element inside the tank that moves up and down with the liquid level, causing the external indicator to change accordingly. Magnetic level indicators are often preferred for chlorine tanks due to their reliability and ability to provide accurate level readings.
What is external indicator?
An external indicator is a measure or signal that originates outside of a system or organization but can provide insights or information about its performance, health, or prospects. It can be used to assess the external environment, market conditions, or other factors that may impact the system or organization.
What is the difference between external and internal indicator?
what is the difference between the external & internal indicator
What is meant by External Indicator used in titration?
An external indicator in titration is a substance that is added in small amounts to the analyte solution during titration to signal the endpoint of the reaction. It changes color at or near the equivalence point, making it easier for the observer to detect when the reaction is complete. Common examples of external indicators include phenolphthalein and methyl orange.
What is Difference between internal and external indicators?
what is the difference between the external & internal indicator
Why diphenylamine is called internal indicator?
Diphenylamine is considered an internal indicator because it changes color in the presence of nitrates by forming a blue complex. This color change is used to detect the presence of nitrates in solutions without the need for an external indicator.
Why in titration of kmno4 no indicator is used?
In the titration of KMnO4, no indicator is used because KMnO4 is a self-indicating titrant. It undergoes a color change from purple to colorless (or brown) at the endpoint of the titration, which makes it unnecessary to add an external indicator. The precise endpoint can be easily detected visually, making the use of an indicator redundant.
Why potassium ferricyanide cannot be used as internal indicator?
Potassium ferricyanide cannot be used as an internal indicator because it is an external indicator that does not change color in response to pH changes in a solution. Internal indicators are usually weak organic acids or bases that change color due to ionization changes as the pH of the solution shifts.
What is external and internal indicator with examples .?
an indicator which is dissolved in the solution in whicdh the main reaction takes place- internal g. phenopthlein
Which type of level indicator is used in chlorine storage tank?
A common type of level indicator used in chlorine storage tanks is a magnetic level indicator. This type of indicator uses a float with a magnetic element inside the tank that moves up and down with the liquid level, causing the external indicator to change accordingly. Magnetic level indicators are often preferred for chlorine tanks due to their reliability and ability to provide accurate level readings.
Why titration not require an external indicator?
Titration does not always require an external indicator because some reactions involved in titration produce a noticeable color change, known as a self-indicating reaction. This color change signals the endpoint of the titration without the need for an external indicator. Examples include the reaction between acid and base or with certain metal ions.
What indicator uses the acronym 'MA'?
The indicator that uses the acronym 'MA' is Moving Average. It is a widely used indicator used to trade trends.
Why is phenolphthalein indicator used?
Phenolphthalein is used as an indicator because the color of the solution is changed according to pH.
