Adding acid is "belt and braces" - iron II is readily oxidised to iron III but this is greatly reduced in the prescence of the ammonium ion which is slightly acidic. Adding more acid merely futher reduces the tendancy for oxidation of the iron II.
It turns the universal indicator to scale 1
The most fizzing will come from the concentrated sulfuric acid, then dilute sulfuric acid, then the acetic acid.The amount of fizzing is due to the concentration of H+ in the solution, and concentrated sulfuric acid has the most H+ in solution. The dilute sulfuric acid has less (because it is dilute) and the acetic acid solution has the least of all because it is a weak acid rather than a strong acid.See the Related Questions for more information.
When lithium hydroxide pellets are added to a solution of sulfuric acid Lithium Sulfate and water are formed. The balanced equation is 2LiOH + H2SO4 ------> Li2SO4 + 2H2O
Aqueous solutions of sodium sulfate do not contain sulfuric acid as they are separate compounds. If sulfuric acid is added to the solution, a reaction may occur to form sulfuric acid and sodium sulfate may dissociate into its ions in water.
Sulfuric acid will turn red when methyl orange is added, indicating that the solution is highly acidic.
It turns the universal indicator to scale 1
The most fizzing will come from the concentrated sulfuric acid, then dilute sulfuric acid, then the acetic acid.The amount of fizzing is due to the concentration of H+ in the solution, and concentrated sulfuric acid has the most H+ in solution. The dilute sulfuric acid has less (because it is dilute) and the acetic acid solution has the least of all because it is a weak acid rather than a strong acid.See the Related Questions for more information.
When lithium hydroxide pellets are added to a solution of sulfuric acid Lithium Sulfate and water are formed. The balanced equation is 2LiOH + H2SO4 ------> Li2SO4 + 2H2O
Aqueous solutions of sodium sulfate do not contain sulfuric acid as they are separate compounds. If sulfuric acid is added to the solution, a reaction may occur to form sulfuric acid and sodium sulfate may dissociate into its ions in water.
Sulfuric acid will turn red when methyl orange is added, indicating that the solution is highly acidic.
Sulfuric acid is added to water during electrolysis to increase the conductivity of the solution. This helps ions move freely in the solution and facilitates the electrolysis process by allowing the flow of electric current. It also helps in stabilizing the pH of the solution.
The aqueous solution of H2SO4 is called sulfuric acid.
Sulfuric acid is added to the silver nitrate solution in electroplating to increase the conductivity of the solution. This allows for better passage of electric current through the solution, aiding in the deposition of silver onto the object being plated. Additionally, sulfuric acid helps in maintaining the pH of the solution at an optimal level for the electroplating process.
to acidify the solution so that it can become a good oxidising agent
Sulphuric Acid is colourless. When universal indicator (UI) is added, sulphuric acid remains colourless. The universal indicator turns 'RED'. Howver, because the UI is in solution with the sulphuric acid, the solution appears to be red.
To neutralize the sulfuric acid completely, you need a 1:2 molar ratio of sodium hydroxide to sulfuric acid. Therefore, you would need to add twice the amount of sodium hydroxide compared to the amount of sulfuric acid, which is 40.0 mL of the sodium hydroxide solution.
A 40 grams per liter solution of sulfuric acid would be approximately a 4% solution. This is calculated by dividing the mass of sulfuric acid by the total mass of the solution and multiplying by 100.