Page 8 - E-Science Prep3 2024-2025 t1 Unit2_Neat

Science department

Prep.3 Third Oxidation & Reduction Reactions

1) Traditional concept

Giving / Taking away H / O

Black Reducing agent Red
Oxidizing agent

Hydrogen Copper oxide

Oxidation process as it combines + O Reduction process as O leaves it

Reducing agent as it takes O away Oxidizing agent as it gives O to H
from copper oxide

2) Electronic concept

Losing / Gaining electrons

Oxidizing agent Chlorine
Reducing agent
Oxidation process / oxidizing agent
Sodium as it gains electron and be – ion

Oxidation process / reducing agent Cl2 + 2é 2Cl-
as it loses electron and be + ion
6
2Na 2Na+ + 2é

Second Term
Term