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Why do you not test sulfates with sulfuric acid?
Sulfate ions (SO4^2-) do not react with sulfuric acid (H2SO4) because they are already in the sulfate form and are not further oxidized or reduced by sulfuric acid. The reaction of sulfuric acid with sulfates would not result in a color change or a precipitate formation, making it impractical as a test for sulfates.
How do you test for phosphoric acid in soft drinks?
phosphoric acid can be tested by titrating a a given sample of soft drinks with diethyle ether in the presence of eriochrome black t as a indicator...
How to prepare nitrate test solution using diphenylamine in sulphuric acid?
To prepare a nitrate test solution using diphenylamine in sulfuric acid, you can mix diphenylamine with concentrated sulfuric acid in a specific ratio. Typically, a 0.1% diphenylamine solution in concentrated sulfuric acid is used for nitrate testing. Follow safety precautions when working with concentrated sulfuric acid as it is corrosive.
What happens to glucose in the phenol sulfuric acid test?
In the phenol sulfuric acid test, glucose reacts with phenol and sulfuric acid to form a colored product. The color change is due to the formation of furfural, which reacts with the sulfuric acid to produce a colored compound. This color change is used to detect the presence of glucose in a sample.
What happens when zinc is added to dilute sulfuric acid in a test tube?
When zinc is added to dilute sulfuric acid in a test tube, a chemical reaction occurs where zinc reacts with sulfuric acid to form zinc sulfate and hydrogen gas. This reaction is a redox reaction where zinc is oxidized to zinc ions, while hydrogen ions in the sulfuric acid are reduced to form hydrogen gas. The production of hydrogen gas can be observed as bubbles forming in the test tube.
In brown ring test why sulphuric acid is added in the sides of the test tube?
The sulfuric acid must form a layer below the water layer.
Why can't sulfuric acid be used instead of hydrochloric acid in sulphate test?
Using sulfuric acid in place of hydrochloric acid for a sulfate test can produce inaccurate results due to the formation of insoluble precipitates with some sulfates. This can interfere with the detection of sulfate ions in the test solution. Hydrochloric acid is preferred as it reduces the likelihood of forming these precipitates, ensuring a more reliable sulfate test.
The acid test tells whether a mineral is .?
a carbonate
Can vitriol cause a positive on a drug test?
Vitriol? As in sulfuric acid? No. It can cause a positive on a death test, though.
What gas will evolve if granulated zinc and sulfuric acid will react in a test tube?
H2s
What will happened if Hydrochloric acid is used instead of sulfuric acid in molisch test?
Using hydrochloric acid instead of sulfuric acid in the Molisch test would yield a different result. Hydrochloric acid does not have the same dehydrating properties as sulfuric acid, so it would not lead to the formation of a purple ring with carbohydrates. The Molisch test relies on the dehydrating ability of sulfuric acid to break down carbohydrates into simpler compounds, which then react with alpha-naphthol to produce the purple ring.
What is ethanoic acid plus sulfuric acid a test for?
When a carboxylic acid is added to an alcohol, it forms an ester: Eg: CH3COOH + CH3OH -> CH3COOCH3 Sulphuric acid acts as a catalyst to this reaction Therefore if you add ethanoic acid and sulfuric acid to a unknown substance and it reacts the original substance was an alcohol.
