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An indicator reaction is always pH dependent because it involves hydrogen. During the reaction, hydrogen ions are either released or captured during the process.
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Why is a indicator's reaction in acids and bases a chemical change?
Indicates whether the substance is an acid or alkali.
How does the pH indicator bromothymol blue measure cellular respiration?
He can use a chemical reaction when it is mixed with CO2
How does the type of indicator affect the pH?
Each indicator has a specific change of color when the pH is changed.
What would you use to show when an acid has completely reacted with an alkali?
A pH indicator: the color is changed at the end of the reaction, when the solution become alkaline.
Why is buffer solution used in EDTA method?
Buffer maintains the pH of the solution through out the reaction. To maintain high alkaline medium ammonia buffer is added to EDTA in analysis of hard water. It is necessary to keep the pH at about 10 for two reasons: (a) all reactions between metal ions and EDTA are pH dependent, and for divalent ions, solutions must be kept basic (and buffered) for the reaction to go to completion; (b) the eriochrome black T indicator requires a pH of 8 to 10 for the desired color change.
Why is a indicator's reaction in acids and bases a chemical change?
Indicates whether the substance is an acid or alkali.
Describe how you would measure PH of an unknown liquide?
Add universal indicator.
How does the pH indicator bromothymol blue measure cellular respiration?
He can use a chemical reaction when it is mixed with CO2
Why you use pH 10 buffer in EDTA titration?
It is necessary to keep the pH at about 10 for two reasons: (a) all reactions between metal ions and EDTA are pH dependent, and for divalent ions, solutions must be kept basic (and buffered) for the reaction to go to completion; (b) the eriochrome black T indicator requires a pH of 8 to 10 for the desired color change.
Is phenolphthalein the indicator used in the titration of Na2CO3 against HCl solution?
Type your answer here... Phenolphthaelin indicator changes its colour at 8.3 pH. But the end point of this reaction is at pH 7. In weak base Strong acid case the curve gives sharp change from 3.2 to 6.0 pH. Hence phenolphthalein indicator will not be advicable.
What fruit and vegetable can you use as a pH indicator?
cabbage juice is a natural pH indicator
What plants can be used to make pH indicator?
If you are asking how to extract a chemical pH indicator from some plant type, I don't know. If you want to know a plant that indicates the relative pH of the soil it grows in, Hydrangea. Its flower's coloration is exactly like litmus paper's reaction to acids and alkalis.
What changes color on pH?
a pH indicator
How does the type of indicator affect the pH?
Each indicator has a specific change of color when the pH is changed.
What would you use to show when an acid has completely reacted with an alkali?
A pH indicator: the color is changed at the end of the reaction, when the solution become alkaline.
What type of indicator should be used to determine the pH of an opaque substance?
Indicators would work to determine the pH of colored substances. The color change may be difficult to read depending on the indicator used. Another alternative to adding a indicator to the substance would be to use a test strip.
Can an indicator provide an exact pH?
An indicator can provide exact pH if you are using the neutralization titration. Paper strip pH indicator are not an exact measurement but a high, medium, and low indication of acids and bases.
