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Why is Barium Sulphate used in the limit test for sulphates?
Barium sulfate is used in the limit test for sulphates because it forms a highly insoluble precipitate with sulfate ions. This property allows for the qualitative or quantitative determination of sulfate ions in a sample by measuring the amount of barium sulfate precipitate formed. The formation of a white precipitate confirms the presence of sulfate ions in the sample.
Why you use BaSO4 reagent instead of BaCl2 solution in limit test of sulphate?
BaSO4 is used in the limit test of sulfate because it has low solubility in water, making it easier to detect small amounts of sulfate ions. BaCl2, on the other hand, is highly soluble in water and may not precipitate out completely to give accurate results in the test.
What is the test for barium ions?
The test for barium ions involves adding a solution of a sulfate compound (e.g. sodium sulfate) to a solution containing the barium ions. A white precipitate of barium sulfate forms if barium ions are present.
How would you test for potassium and sulfate ions in the alum?
To test for potassium ions, you can use a flame test by heating a sample of the alum on a looped wire in a Bunsen burner flame; potassium ions produce a lilac flame color. For sulfate ions, you can add a few drops of barium chloride solution to a solution of the alum; a white precipitate (barium sulfate) forms if sulfate ions are present.
Test for presence of water in anhydrous copper sulphate?
To test for the presence of water in anhydrous copper sulfate, heat a small sample of the compound in a test tube. If the compound changes color from white to blue, it indicates that water is present in the compound. This color change happens as the anhydrous copper sulfate absorbs water vapor from the air, converting back into hydrated copper sulfate.
How to tested Chloride and Sulfate limit test By USP monograph?
To test Chloride limit according to USP monograph, you would typically use a silver nitrate solution and potassium chromate as indicator. For Sulfate limit test, turbidimetric method with barium chloride solution is commonly employed. Both tests involve titration techniques to determine the presence and concentration of Chloride and Sulfate ions within the specified limits as per the USP guidelines.
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.
Why is Barium Sulphate used in the limit test for sulphates?
Barium sulfate is used in the limit test for sulphates because it forms a highly insoluble precipitate with sulfate ions. This property allows for the qualitative or quantitative determination of sulfate ions in a sample by measuring the amount of barium sulfate precipitate formed. The formation of a white precipitate confirms the presence of sulfate ions in the sample.
What happens when dil h2so4 is added to a small amount of sodium carbonate taken in a test tube?
When dilute sulfuric acid (H2SO4) is added to sodium carbonate (Na2CO3) in a test tube, a chemical reaction occurs where carbon dioxide gas (CO2) is produced. This gas can be observed as bubbles forming in the test tube. Additionally, sodium sulfate (Na2SO4) and water (H2O) are also formed as products of the reaction.
Why is it that when iron is added to dilute acid the test tube turns hot?
Because there's a chemical reaction going on.
Why you use BaSO4 reagent instead of BaCl2 solution in limit test of sulphate?
BaSO4 is used in the limit test of sulfate because it has low solubility in water, making it easier to detect small amounts of sulfate ions. BaCl2, on the other hand, is highly soluble in water and may not precipitate out completely to give accurate results in the test.
Why is a very dilute solution of copper sulfate is used in biuret test?
A very dilute solution of copper sulfate is used in the biuret test because it allows for the detection of proteins through the formation of a complex with peptide bonds. When proteins are present, the copper ions in the dilute solution react with the peptide bonds, resulting in a color change to violet. The dilution ensures that the solution is not too concentrated, which could lead to interference in color interpretation and false positives. This sensitivity is crucial for accurately determining protein presence in a sample.
What is the test for barium ions?
The test for barium ions involves adding a solution of a sulfate compound (e.g. sodium sulfate) to a solution containing the barium ions. A white precipitate of barium sulfate forms if barium ions are present.
What do you observe when dilute HCl is added to Na2CO3 in a test tube?
When dilute HCl is added to Na2CO3 in a test tube, effervescence (bubbling) occurs due to the formation of carbon dioxide gas. This is because the reaction between the acid and carbonate produces carbonic acid, which quickly decomposes to release CO2 gas.
What happens when dilute sulfuric acid is added over zinc granules?
coz when we dilute zinc granules are reacted with dilute HCl (hydrochloric acid), zinc chloride i.e. ZnCl2 is formed along with the evolution of hydrogen gas H2. the presence of hydrogen gas can be tested by bringing a naked flame to the mouth of the test tube. Hydrogen gas burns with a pop sound.
Is reaction of dilute sulfuric acid with barium chloride solution a slow or fast or moderate reaction?
The reaction of dilute sulfuric acid with barium chloride solution is typically a fast reaction, resulting in the formation of a white precipitate of barium sulfate. This reaction is a common test for the presence of sulfate ions due to the insolubility of barium sulfate in water.
Why is acetic acid added in the limit test for sulphates?
Acetic acid is added in the limit test for sulphates to prevent the precipitation of other metal ions that could interfere with the test results. It forms a soluble complex with various metal ions, ensuring that only sulphates are precipitated and measured accurately.
