answersLogoWhite

0


Best Answer

The preferential discharge of ions is affected by the kind of electrode used in the reaction and also the concentration of the ions in the solution this especially pertains to solutions containing halides

User Avatar

Wiki User

15y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

Preferential discharge is when an ion is discharged in preference to another. for e.g if in an electrolyte there are copper and sodium ions, the copper ions will be discharged in preference to the sodium ions this is because sodium is a reactive metal whereas copper is not.

to help you there is the 'ease of discharge table'

CATIONS PRODUCT AT THE CATHODE

k+ hydrogen

Na+ hydrogen

Ca+ hydrogen

Mg+ hydrogen

Zn2+ zinc

Pb2+ lead

Cu2+ copper

Ag+ silver

hydrogen ions are discharged in preference to potassium,sodium,calcium and magnesium because they are reactive metals.

ANIONS PRODUCT AT ANODE

Cl- chlorine

Br- bromine

I- iodine

SO42- oxygen from water

NO3- oxygen from water

o2 from H2O is discharged in preference to SO42- and NO3- ions

This table apply to any electrolysis.

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

This is the order in which ions are discharged in an electrolytic process or electrolysis

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is preferential discharge of ions during electrolysis and what are they?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about General Science

What is the name of a process by which water is broken down into hydrogen and oxygen?

It's an example of electrolysis. Not unwanted hair removal, but that does use the same process. Electrolysis is the process of breaking down compounds by running an electric current through them.


Why the passage of electric current through a metallic conductor is not called electrolysis?

Because that's not what electrolysis is about. From Wikipedia: "...The key process of electrolysis is the interchange of atoms and ions by the removal or addition of electrons from the external circuit..." When electrons just pass through a metal, no atoms or ions are exchanged - only the electrons.


What is electrolytic decomposition reaction?

a chemical decomposition reaction produced by passing an electric current through a solution containing ions is known as electrolytic decomposition reaction


What is brine electrolysis?

Brine elctrolysis is where a solution of sodium chloride (common table salt) dissolved in water is broken down into chlorine gas, hydrogen gas, hydroxide ions and sodium ions by passing and elctrical curren through the solution. The chlorine gas will liberate at the cathode and hydogen at the anode, and the two ions produced will combine to form a solution of sodium hydroxide, a very strong alkali which has many applications. (The NaOH solution will be, when the reaction is complete, in place of the NaCl solution). Hope this is useful!!


Ions that are made of more than one atom are examples of what?

Ions made up of more than one atom are called polyatomic ions.

Related questions

What the factors that affect the preferential discharge of ions at the anode and the cathode?

how am i suposed to answer it if i am asking wat it is


Why does the color of copper sulfate solution changes during electrolysis?

The color fades as there is a discharge of copper two ions to form copper atoms


What is conclusion of electrolysis?

The result of electrolysis is the separation of a molecule in ions: cations and anions.


Where does copper collect during electrolysis?

The cathode, where the +ions in solution accept electrons and become neutral metal atoms.


What is the name of a process by which water is broken down into hydrogen and oxygen?

It's an example of electrolysis. Not unwanted hair removal, but that does use the same process. Electrolysis is the process of breaking down compounds by running an electric current through them.


Why does hydrochloric acid conduct electricity?

Because it is an electrolyte in water and becomes ionized and ions are attracted towards corresponding electrodes during the electrolysis.


How are hydrogen ions removed from water?

The process is called Electrolysis.


What does electrolysis use to separate molecules in a chemical change?

The electrolysis ionize the particles/ molecules present in the particles and charged the positive and negative ions. Positive ions collected on negative electrode and Negative ions collected on positive electrodes.


What is the structure of molten sodium chloride?

In molten sodium chloride the free moving particles are Na+ and Cl- ions, during electrolysis sodium ion moves towards cathode and chloride ion towards anode.


Which part of a cell attracts the negative ions in an electrolysis process?

Anode


Why is an outside source of energy needed for electrolysis?

It is needed to cause the ions to seperate.


Why the passage of electric current through a metallic conductor is not called electrolysis?

Because that's not what electrolysis is about. From Wikipedia: "...The key process of electrolysis is the interchange of atoms and ions by the removal or addition of electrons from the external circuit..." When electrons just pass through a metal, no atoms or ions are exchanged - only the electrons.