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Because in FeSO4, iron present in +2 oxidation state but the stable oxidation state is +3. The Fe(II) get oxidized into Fe(III) in ferrous sulfate solution that's why preparation of solution must necessary.

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12y ago
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4mo ago

Freshly prepared ferrous sulfate solution is used in the detection of nitrate ions because it is sensitive to the presence of nitrate ions. When nitrate ions are present, they react with the ferrous sulfate solution to form a brown ring at the junction of the two layers, indicating the presence of nitrate ions. The use of freshly prepared solution is important to ensure the accuracy and sensitivity of the test, as older solutions may have degraded and may not produce accurate results.

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Q: Why you use freshly prepared ferrous sulphate solution in detection of nitrogen?
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What colored coating is formed on adding zinc granules to freshly prepared ferrous sulphate solution?

A red-brown colored coating is formed on adding zinc granules to freshly prepared ferrous sulphate solution. This is due to the oxidation of ferrous ions in the solution to ferric ions, which results in the formation of ferric oxide/hydroxide on the surface of the zinc granules.


What is observed when sodium sulphate solution is added to barium chloride?

A white precipitate of barium sulphate is formed when sodium sulphate solution is added to barium chloride solution. This is due to the formation of an insoluble salt, barium sulphate, which appears as a white solid in the solution.


We are using 5 percent solution of copper sulphate processing 140 ton per hour and consume 885 gm of copper sulphate per 1 ton of ore. what would be the usage of copper sulphate in liters per hour?

To calculate the usage of copper sulphate in liters per hour, we first need to determine the total amount of copper sulphate consumed per hour. 140 tons of ore per hour x 885 gm of copper sulphate per ton = 123,900 gm of copper sulphate per hour Next, convert grams to liters: 1 liter of 5% copper sulphate solution weighs approximately 1 kg or 1000 grams. Therefore, 123,900 gm = 123.9 liters per hour of the 5% copper sulphate solution.


What do you get when you evaporate a copper sulphate solution?

When you evaporate a copper sulphate solution, the water content evaporates and leaves behind copper sulphate crystals.


The blue colour of the solution fades during the electrolysis of copper sulfate. Explain why.?

Why does the colour of copper sulphate solution change when an iron nail is dipped in it? When an iron nail is placed in a copper sulphate solution, iron displaces copper from copper sulphate solution forming iron sulphate, which is green in colour. Therefore, the blue colour of copper sulphate solution fades and green colour appears.

Related questions

Which chemical is used for the detection of sulphate in aqueous solution?

Add some barium chloride solution to the neutral or weakly acid sulfate solution


How benedict solution prepared?

A Benedict's solution is a solution of sodium citrate, sodium carbonate and copper sulphate, whose colour changes from blue to yellow to red in the presence of reducing sugars such as glucose.


What colored coating is formed on adding zinc granules to freshly prepared ferrous sulphate solution?

A red-brown colored coating is formed on adding zinc granules to freshly prepared ferrous sulphate solution. This is due to the oxidation of ferrous ions in the solution to ferric ions, which results in the formation of ferric oxide/hydroxide on the surface of the zinc granules.


What do copper sulphate crystals form when a hot saturated solution of copper sulphate is cooled?

Copper sulphate crystals form when a hot saturated solution of copper sulphate is cooled down. As the solution cools, the solubility of copper sulphate decreases, causing the excess copper sulphate to come out of the solution and form crystals.


What is observed when sodium sulphate solution is added to barium chloride?

A white precipitate of barium sulphate is formed when sodium sulphate solution is added to barium chloride solution. This is due to the formation of an insoluble salt, barium sulphate, which appears as a white solid in the solution.


What happens when freshly prepared solution of ferrous sulphate followed by conc.H2SO4 is added to nitric acid?

You can obtain the ferric sulphate - Fe2(SO4)3; because the ferrous sulphate react as a reducing agent.


How do you distinguish between copper sulphate solution sodium chloride solution sodium nitrate solution or sodium sulphate solution?

To distinguish between these solutions: Copper sulphate solution will be blue in color. Sodium chloride solution will not exhibit any color and will form white crystals upon drying. Sodium nitrate solution will not exhibit any color and is typically used as an oxidizing agent. Sodium sulphate solution will not exhibit any color and may form white crystals upon drying.


Can copper sulphate be separated from its solution by crystallization?

Yes, copper sulphate(CuSO4) can be separated from its solution in crystalline form.


What is the colour of aqueous solution of ferrous sulphate?

The aqueous solution of ferrous sulphate is typically pale green in color.


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.


What is the colour of sodium sulphate solution by chemists?

The solution is colorless.


What forms a solution?

copper sulphate