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phenolphthalein turns pink when basic solution is added to it but remains colorless in case of neutral and acidic solution
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Why are solubility tests helpful to determine unknown substances?
A simple solubility test can be used to identify an unknown substance. Most substance will make a precipitate when around certain molecules.
What will happen when phenolphthalein paper is used to test a base?
It will change its colour from white to red on increasing the pH(for bases)
Are substances considered reducing in fehling's test also the substances reducing in Benedict's test?
yes.
How can you test for acids and bases?
by using phenolphthalein,litmus paper (red and blue),cabbage,tea,and PH paper or PH meter
How do you test sour and bitter substances without tasting them?
There are a few different ways you could test for sour and bitter substances without tasting them. You could test for the presence of elements that make something sour or bitter for example.
Why tartaric acid not give phenolphthalein test?
because of hydroxyl group
What are the limitations of phenolphthalein test?
phenolphthalein reaction is indicative of blood, it is only a presumptive test and false positives are possible. Additionally, the reaction is not species specific. Positive reactions are not limited to human blood.
Why are solubility tests helpful to determine unknown substances?
A simple solubility test can be used to identify an unknown substance. Most substance will make a precipitate when around certain molecules.
How does a flame test help to identify inorganic substances?
The color of the flame is indicative of the constituent elements.
Is solution x safe to drink with phenolphthalein?
what would happen if scientists were testing to see if a substance was safe to drink and used phenolphthalein as an indicator and what would happen if the test was done using methyl orange
What will happen with each what indicators used to test an acid phenolphthalein?
Does mindless behavior like the omg girls
What will happen when phenolphthalein paper is used to test a base?
It will change its colour from white to red on increasing the pH(for bases)
Are substances considered reducing in fehling's test also the substances reducing in Benedict's test?
yes.
Are substances that test positive with the Ames test necessarily carciongenic in humans?
The substances that are test positive with Ames test may or may not be carcinogenic for humans. Similarly, some substances that cause cancer in laboratory animals do not give a positive result Ames test. It is not possible to decide the carcinogenicity of any substances only depending on the Ames test.
How can you test for acids and bases?
by using phenolphthalein,litmus paper (red and blue),cabbage,tea,and PH paper or PH meter
Why is it important to perform tests on a control urine sample not containing any chemical substance?
It is important to perform tests on a control urine sample not containing any chemical substances, a test result on a known quality can assist you in finding the unknown qualities of a urinary sample containing chemical substances. It also can validate any positive results you get with your test sample.
Which test substances did not test positive for any of the organic compounds?
DNA
