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What is the term for the stage in an acid-base titration when the indicator changes color?
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What changes color at the endpoint of titration?
change in pH, changes the colour (of the indicator)
What happens during an acidic base titration in the presents of an indication?
The indicator will change color as the pH changes.
What is the purpose of using universal indicator in titration?
A universal indicator is an indicator that changes color along with changes in pH level. The purpose of using it is to find a point at which a mixture of acid and base becomes neutral.
What is the function of an indicator in titration?
Change color
Is one method for detecting the endpoint of a titration involves using an idicator dye that changes color at different pH values true or false?
True. One method for detecting the endpoint of a titration is indeed using an indicator dye that changes color at different pH values. The color change of the indicator dye can be observed to determine when the reaction between the titrant and analyte is complete.
What changes color at the endpoint of titration?
change in pH, changes the colour (of the indicator)
What happens during an acidic base titration in the presents of an indication?
The indicator will change color as the pH changes.
What is the purpose of using universal indicator in titration?
A universal indicator is an indicator that changes color along with changes in pH level. The purpose of using it is to find a point at which a mixture of acid and base becomes neutral.
What is the function of an indicator in titration?
Change color
Is one method for detecting the endpoint of a titration involves using an idicator dye that changes color at different pH values true or false?
True. One method for detecting the endpoint of a titration is indeed using an indicator dye that changes color at different pH values. The color change of the indicator dye can be observed to determine when the reaction between the titrant and analyte is complete.
What is stoichiometric end point?
when stoichiometric amounts of the titrant and the analyte have completely reacted. this differs from an endpoint which is when a secondary indicator's color change takes place. :) hope that helps
What structure of phenolphthalein indicator and the reaction of the color exchange in the titration?
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Changes color at the endpoint of titration?
indicates end of titration neutralisation of the reaction
Why should the endpoint be taken as the faint pink color of the indicator?
When using an indicator in a titration, the color changes happen when the titrant has reacted with all the substance of interest in the sample. As soon as the titrant isn't reacting with the sample any more, it starts reacting with the indicator, and continuing past the first hint of color will be using too much titrant, and the calculations for the concentration of the sample will be wrong. Phenolphthalein starts out pink, but will turn red as the pH keeps changing as you go further past the endpoint of the titration.
What is the color of end point for the titration of the acid?
It is dependent on the indicator used. The direction of the reaction should be stated to indicate a color change. For example, if the acid is in the flask, methyl red changes its color from red to yellow.
When do you know endpoint of titration?
when the colour of the indicator used is the color it should be in neutral
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.
