0
Why is it difficult to see whether you have added the pH indicator phenopthalein to the flask of acid solution?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
An indicator with Ka equals 1.25 x 10-4 could be used to tell you whether a solution has a pH above or below?
4
What is phenolphthalein?
it is a agar medium for Microbiology containing phenolphthalein biphosphate. It is used in Petri plates and detects the phosphatase character of microbial colonies but requires final addition of alkali to color the phenolphatlein and the color rapidly fades.
How could you determine whether phenolphthalein remains in the residue of a titration reaction?
The easiest way is to add back some of the solution you were titrating. If phenolphthalein remains, it will react with the solution and change back to purple. Incidentally, phenolphthalein will always remain in the solution of the titration reaction - it changes color depending upon the pH of the solution, but the indicator itself is not affected by the titration reaction.
What are the functions of indicators?
Indicator species are a useful management tool, and can help us delineate an ecoregion, indicate the status of an environmental condition, find a disease outbreak, or monitor pollution or climate change. In one sense, they can be used as an "early warning system" by biologists and conservation managers. Indicator species must also be accompanied by a thorough study of what is being indicated, what is really correlated, and how this one species fits into the rest of ecosystem.
What is a universal indicator changes into this color in water?
It will go green around pH 7. However because you are using universal indicator, it will be difficult to establish whether your water is completely neutral due to the variation in 'green color.' For example: one person's green could be yellow-green, another person's could be grass colored. x
Indicator that can help us identify whether a solution contains an acid or what?
This is a pH indicator.
What is used as an indicator of whether a solution is acidic or basic?
pH strips are used to determine whether a solution is acidic or basic
What color does the indicator turn when starch is present?
Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. Iodine is used to indicate whether starch is present in a solution. If starch IS present, the indicator will turn dark blue/black. FOR WHAT PURPOSE WE USE STARCH-IODINE INDICATOR PAPER
What is indicator used for?
An acid base indicator is used for determining the pH of a solution, and determining if it is an acid, a base, or neutral solution. Red-ox indicators are used to check whether a desired red-ox reaction has proceeded to its completion.
What indicator substance is used to test a leaf for starch?
Iodine Solution is used to determine whether starch is present.
An indicator with Ka equals 1.25 x 10-4 could be used to tell you whether a solution has a pH above or below?
4
What is phenolphthalein?
it is a agar medium for Microbiology containing phenolphthalein biphosphate. It is used in Petri plates and detects the phosphatase character of microbial colonies but requires final addition of alkali to color the phenolphatlein and the color rapidly fades.
Using the Kw equation how is it possible to determine whether an aqueous solution is acidic basic or neutral?
When you combine the Kw equation with the total mass of the solution, you will get a number. If the number is above 60, it is a acid, it is below 75, it is a base and if your number is between 60 and 75, it is neutral.
What is an indices used for?
An acid base indicator is used for determining the pH of a solution, and determining if it is an acid, a base, or neutral solution. Red-ox indicators are used to check whether a desired red-ox reaction has proceeded to its completion.
Litmus solution is purple dye which is is extracted from?
Litmus solution is obtained from lichens. It is used to test whether the solution is acidic or basic.
What indicator can be used to determine whether an adapter is connected to a functioning hub or switch?
A Link-Pulse indicator
What are examples of synthetic pH indicators?
Red Cabbage Juice can be used as an easy natural indicator. Bromothymol Blue is a common chemical pH indicator
