Oxidation and Reduction Reactions
“This material has been developed as a part of the Australian School Innovation in Science, Technology and Mathematics Project funded by the Australian Government Department of Education, Science and Training as a part of the Boosting Innovation in Science, Technology and Mathematics Teaching (BISTMT) Programme.”
Refraction and Optical Fibres
When light travels from one medium to another it changes speed.
It also changes direction.
Redox reactions in photosynthesis
Electrolysis: SALTS AND WATER
REDOX REACTIONS IN BLEACHES: H2O2 HClO SO2
OXIDATION AND REDUCTION
OXidation + REDuction
What is oxidation ?
OXIDATION IS DEFINED AS :
REDUCTION IS DEFINED AS :
3: GAIN OF ELECTRONS
When is it a redox reaction ?
What about this reduction reaction?
2MnO4-(aq)+ 16H+ +10e- → Mn2+(aq)+ 8H2O(l)
and this one?
Cr2O72-(aq) + 14H+ +6e- → 2Cr3+(aq)+ 7H2O(l)
uncombined with other
oxidation number is
their oxidation number
is the charge on the ion :
Is H2(g) + I2(g) → 2HI (g) a redox reaction?
2) Mg(s) + H2SO4 (aq) → MgSO4 (aq) + H2 (g)