Question

Match the following related items.

1. gain of electrons reduction 2. low E0 oxidation 3. loss of electrons anions 4. high E0 negative ions 5. negative ions weak oxidizer 6. positive ions cations 7. migrate to cathode strong oxidizer 8. migrate to anode positive ions

Answer 1

Answer: 1. gain of electrons: reduction

2.low
`E_0`: weak oxidiser

3. loss of electrons: oxidation

4. high
`E_0`: strong oxidiser

5. negative ions: anions

6. positive ions: cations

7. migrate to cathode : positive ions

8. migrate to anode : negative ions

Explanation: Reduction is the process in which electrons are gained and thus there is decrease in the oxidation number.

`Fe^(2+)+2e^-\rightarrow Fe`

Oxidation is the process in which electrons are lost and thus there is an increase in the oxidation number.

`Fe\rightarrow Fe^(2+)+2e^-`

Elements with high reduction electrode potentials
`(E^0)` can easily accept electrons and thus themselves get reduced and thus act as good oxidizing agents.

Elements with low reduction electrode potentials
`(E^0)` can easily lose electrons and thus themselves get oxidized and thus act as good reducing agents.

The anions bearing negative charge are called as anions and the ions bearing positive charge are called as cations.
`H^+` is action and
`OH^-` is an anion.

In electrolytic cell, Cathode is a negatively charged electrode and thus attracts cations bearing positive charge and anode is a positively charged electrode and thus attracts anions bearing negative charge.

Answer 2

1. gain of electrons - REDUCTION
2. low E0 - STRONG OXIDER
3. loss of electrons - OXIDATION
4. high E0 - WEAK OXIDER
5. negative ions - ANION
6. positive ions - CATIONS
7. migrate to cathode - POSITIVE IONS
8. migrate to anode - NEGATIVE IONS