electrolysis a chemical process

1. ELECTROLYSIS
Is An Electro Chemical Reaction

2. Definitions
 Electrolysis, process by which electric current is passed through a substance to
effect a chemical change.
 Electrolysis definition is - the producing of chemical changes by passage of an
electric current through an electrolyte
 electrolysis is a technique that uses a direct electric current to drive an otherwise
non-spontaneous chemical reaction
 Electrolysis is the process by which electricity passes through a molten ionic
compound or through an electrolyte solution to produce new substances.

3. IMPORTANT TERMS

4. Electrodes
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit.
 ANODE
The anode is now defined as the electrode at which electrons leave the cell and
oxidation occurs (indicated by a minus symbol, "−"),
 CATHODE
the cathode as the electrode at which electrons enter the cell and reduction
occurs (indicated by a plus symbol, "+").

5. ELCTROLYTE
 Electrolyte: A substance that dissociates into ions in solution and acquires the
capacity to conduct electricity. Sodium, potassium, chloride, calcium, and
phosphate are examples of electrolytes, informally known as lytes.
 Solutes that form solutions that can conduct electricity are called electrolytes

6. IONS
 ANION
An anion is an ionic species having a negative charge. The chemical species
may be a single atom or a group of atoms. An anion is attracted to the anode in
electrolysis. Anions are typically larger than cations (positively charged ions) because
they have extra electrons around them
 CATIONS
A cation is an ion or group of ions possessing a positive charge and having
the natural ability to move toward the negative electrode in electrolysis.

7. Elctric process
It says some thing about electric current
Basic
the positive ions are immersed in the sea of electrons

8. when you connected the battry
the free electrons are starts to flow
towards the positive charge of the battry

9. Setup
take the two copper plate known As electrodes
Battry to give power supply to electrodes

10. Setup
This is immersed in to the ionic compound solution or
molten ionic compound named as electrolyte
In here we take the nacl which is in molten state at 801
degree

11. IN PROCESS
 In electrolysis, positive ions gain electrons at the cathode (negative electrode) and
negative ions lose electrons at the anode (positive electrode)

12. In process
 Na+ ions are cations are moved towards the cathode
 Cl - ions are move towards the anode

13. The reactions at each electrode are called half equations.
The half equations are written so that the
same number of electrons occur in each equation.
2Na+ + 2e- 2Na (sodium metal at the (-)cathode).
2Cl- - 2e- Cl2 (chlorine gas at the (+)anode).
Sodium ions gain electrons (reduction) to form sodium atoms.
Chloride ions lose electrons (oxidation) to form chlorine atoms.
The chlorine atoms combine to form molecules of chlorine gas.
The overall reaction is
2Na+Cl-
(l) 2Na(s) + Cl2(g)
OVERALL REACTION

14. THANKING YOU
WITH GREETINGS
JOHN PETER B
1ST BED (PHYSICAL SCIENCE )
LAXMI COLLEGE OF EDUCATION
GANDHIGRAM,DINDIGUL