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Barium sulfate is very sparingly soluble. Any addition of it to a solution containing sulfate or barium will almost immediately cause a precipitate to form.

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How can you test a solution for the barium ions?

Acidify the given solution with a few drops of concentrated HNO3 followed by the addition of 4 mol dm-3 sulphuric acid or ammonium sulphate. A white precipitate implies that there are Barium (II) ions present in the solution. The objective of the test give above is to recognize the Barium(II) ions as the white precipitate of barium sulphate which is not soluble in most of the solvents. Adding a sulphate solution at first might cause distractions as other cations such as strontium also make white precipitates with sulphate ions. Those other precipitates dissolve in dilute nitric acid.


Why is the reaction between barium chloride and sodium sulphate also called presipitation reaction?

It is because the white precipitate of barium sulphate by the reaction of SO4(VALENCY -2) AND BA2.THE OTHER PRODUCTS FORMED IS SODIUM CHLORIDE WHICH remains in the solution. This is an example of double displacement reaction. NA2SO4(aq)+BACl2(aq) -- BASO4(S)+2NACl(aq)


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.


In a flame test what color flame will barium chloride have?

Barium chloride, or any other barium salt, should burn with a green flame. When a barium salt is burned, the thermal energy is transferred to the outer electrons of the barium ions. They gain enough energy to excite them to a higher energy level. They then drop back to their ground state, releasing energy. This energy corresponds to a wavelength of light, which is emitted from the ion. This wavelength corresponds to green light, hence the green flame observed.


What is the color of the flame of barium nitrate?

The flame of barium nitrate typically produces a pale green color when burned. This green color is a characteristic flame test color for barium compounds.

Related Questions

Why is barium chloride and alcohol used in the limit test for sulphates?

Barium chloride is used in the limit test for sulphates because it forms a precipitate with sulphate ions. Alcohol is added to the mixture to promote the formation of small crystals, which makes it easier to detect the presence of sulphate ions in the sample.


Why hcl used in the limit test of sulphates?

Hydrochloric acid (HCl) is used in the limit test of sulphates because it helps in the precipitation of sulphates as insoluble barium sulphate (BaSO4). This makes it easier to quantitatively determine the amount of sulphate present in a sample through gravimetric analysis. The addition of excess HCl ensures that all sulphates are converted to BaSO4, allowing for accurate measurement.


Why do you add hydrochloric acid to test for sulphate?

Hydrochloric acid is added to a solution being tested for sulphate ions to precipitate the sulphate as barium sulphate. This is a confirmatory test for the presence of sulphate ions in the solution because barium sulphate is insoluble and forms a white precipitate.


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.


What is the chemical equation for the reaction between barium chloride and copper sulphate?

The chemical equation for the reaction between barium chloride (BaCl2) and copper sulfate (CuSO4) is: BaCl2 + CuSO4 -> BaSO4 + CuCl2. This reaction forms barium sulfate (BaSO4) and copper (II) chloride (CuCl2) as the products.


What will you see when you react sulfuric acid and barium hydroxide?

White precipitate will formed which is barium sulfate.


How do you test for sulphate ions?

add barium chloride or barium nitrate to a solution containing sulphate ions SO4 2-. To the same solution add hydrochloric acid in excess. OBSERVATIONS, a white precipitate which is insoluble in excess acid confirms presence of SO42- IF IT DISSOLVES then it confirms SO32- ----------------------------------------- 1) Add barium nitrate solution under acidic conditions (use an equal volume of hydrochloric acid) to the unknown solution 2) A white precipitate of barium sulphate forms if sulphate ions are present


What piece of equipment can you use to heat up barium sulphate?

Bunson burner and test tube/flask.


How can you test a solution for the barium ions?

Acidify the given solution with a few drops of concentrated HNO3 followed by the addition of 4 mol dm-3 sulphuric acid or ammonium sulphate. A white precipitate implies that there are Barium (II) ions present in the solution. The objective of the test give above is to recognize the Barium(II) ions as the white precipitate of barium sulphate which is not soluble in most of the solvents. Adding a sulphate solution at first might cause distractions as other cations such as strontium also make white precipitates with sulphate ions. Those other precipitates dissolve in dilute nitric acid.


What is a Barium meal?

It is a medical concoction that is used to provide contrast in the X-rays, during an Upper G.I. exam. It is comprised of Barium Sulphate.


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.


Why alcohol used in the limit test for sulphate?

Alcohol helps to prevent super saturation.