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The pH range over which an indicator changes color.

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The pH range over which an indicator changes color is its?

The pH range over which an indicator changes color is its transition range. This is the range of pH values over which the indicator molecule shifts between its acidic and basic forms, resulting in a visible color change.


How many pH units change are usually required for an indicator to undergo a color transition?

It depends on the sensitivity of the indicator you are using. There should be a guide with the indicator you are using. Litmus paper, which is the most common form of pH indicator, will change fairly constant across the pH scale, but a neutral (pH 7+/- 0.5 about) solution will normally not cause a change.


What does an acid base indicator measure?

It indicates that the solution's range is above or below of its transition value. For example the transition value of phenolphthalein is around 9.0. Hence it shows a pink colour in basic solutions (pH>9) and colourless in acidic solutions.


Metacresol purple is an indicator that changes from yellow to purple at pH 8.2. what is Ka for this indicator and it's pH range and color of the solution with pH 9.0 and few drops of Metacresol purple?

The Ka for metacresol purple is not readily available. The pH range for this indicator is typically around 7.2 to 9.8 where the color transition occurs. At pH 9.0, metacresol purple would likely be predominantly purple, indicating a higher pH level.


What is the result for acid and alkaline respectively when they're tested with red rose indicator?

If red rose indicator is used, acid will turn the indicator red, while alkaline solutions will turn the indicator green.

Related Questions

The pH range over which an indicator changes color is its?

The pH range over which an indicator changes color is its transition range. This is the range of pH values over which the indicator molecule shifts between its acidic and basic forms, resulting in a visible color change.


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