0
Indicator is added to zinc because firstly it combines with zinc and forms zinc-indicator complex and after addition of more EDTA to the complex , the zinc which was in the form of complex gave free indicator and forms Zn-EDTA complex and the free indicator gaves blue colour which indicates end point of titration.
What else can I help you with?
Difference between precipitation titration and complexometric titration?
In precipitation titration, the formation of a solid precipitate is used to determine the endpoint of the titration, while in complexometric titration, a complex formation reaction is used to determine the endpoint. Precipitation titration is often used for specific ion determinations, while complexometric titration is used for determining metal ions by forming stable complexes with titrant.
Why potassium thiocyanate is added in the titration of sodium thiosulphate with copper?
On addition of the KI to your copper (II) solution, you formed Copper (I) iodine solid and produced the tri-iodide ion. It is the tri-iodide ion that you are titrating with the sodium thiosulfate. The tri-iodine ion is what itercalates into the starch molecules to form the dark blue color you are using as an end point in the titration. Some the the tri-iodide ion formed will adsorb to the surface of the solid copper (I) iodine formed. This must be desorbed for a complete titration. The addition of the potassium thiocyanate, displaces the adsorbed tri-iodine ion, and liberates it for titration.
Why should enough KHT be added to the KCl-NaCl solution to ensure that some solid remains undissolved after the 20 minute stirring?
Adding enough KHT ensures that a saturated solution is formed, which is necessary to determine the endpoint of the titration accurately. Some solid should remain undissolved after the 20-minute stirring to ensure that all the KCl has reacted with the silver ions before titration begins.
Why glycerin used for the titration of boric acid?
Glycerin is used to prevent boric acid from forming a solid precipitate during titration. Boric acid can form a complex with glycerin, preventing it from crystallizing and ensuring a clear endpoint is reached during titration.
Why heat citric acid before titration?
Heating citric acid before titration is done to help dissolve the solid citric acid more effectively in the solution. This ensures that the titration reaction occurs uniformly and the results are accurate. Additionally, heating can also help increase the rate of the reaction, making the titration process faster.
Difference between precipitation titration and complexometric titration?
In precipitation titration, the formation of a solid precipitate is used to determine the endpoint of the titration, while in complexometric titration, a complex formation reaction is used to determine the endpoint. Precipitation titration is often used for specific ion determinations, while complexometric titration is used for determining metal ions by forming stable complexes with titrant.
Why potassium thiocyanate is added in the titration of sodium thiosulphate with copper?
On addition of the KI to your copper (II) solution, you formed Copper (I) iodine solid and produced the tri-iodide ion. It is the tri-iodide ion that you are titrating with the sodium thiosulfate. The tri-iodine ion is what itercalates into the starch molecules to form the dark blue color you are using as an end point in the titration. Some the the tri-iodide ion formed will adsorb to the surface of the solid copper (I) iodine formed. This must be desorbed for a complete titration. The addition of the potassium thiocyanate, displaces the adsorbed tri-iodine ion, and liberates it for titration.
Why should enough KHT be added to the KCl-NaCl solution to ensure that some solid remains undissolved after the 20 minute stirring?
Adding enough KHT ensures that a saturated solution is formed, which is necessary to determine the endpoint of the titration accurately. Some solid should remain undissolved after the 20-minute stirring to ensure that all the KCl has reacted with the silver ions before titration begins.
What is The process of adding a known amount of solution of known concentration to determine the concentration of another solution is called?
titration is the best method to determine the unknown concentration of the unknown. if ur known is a solid then you would have to used distilled water to ensure it is submerged before you titrate.
Why glycerin used for the titration of boric acid?
Glycerin is used to prevent boric acid from forming a solid precipitate during titration. Boric acid can form a complex with glycerin, preventing it from crystallizing and ensuring a clear endpoint is reached during titration.
When energy is added to a solid it can reach its?
When energy is added to a solid, it can reach its melting point where it transitions from a solid to a liquid.
Why heat citric acid before titration?
Heating citric acid before titration is done to help dissolve the solid citric acid more effectively in the solution. This ensures that the titration reaction occurs uniformly and the results are accurate. Additionally, heating can also help increase the rate of the reaction, making the titration process faster.
What is the suffix that can be added to the word solid?
Solid-ity. Solid-arity.
When is Precipitation Titration used?
Precipitation titration is used to determine the concentration of ions in a solution by forming a solid precipitate. It is commonly used for determining the concentration of halides, sulfides, and other ions that can form insoluble salts.
What is solid to a gas and is heat added or removed?
Of course heat is added because you are turning solid which is like ice to gas which is water vapour !!
What is the equation for the reaction that occurs when sulfuric acid is added to a solid?
It depends on the solid!
Is zinc hydroxide added as a solid or liquid with with dilute hydrochloric acid?
solid is it?
