Oxidation and reduction, Chemistry

 

Definitions

 Oxidation exactly meant 'combination with oxygen' and reduction 'removal of oxygen'. These definitions have been illustrated. Oxidation implies combination with a more electronegative element, the removal of a less electronegative one, or same the removal of electrons. Reduction is the opposite to oxidation and in general implies addition of electrons. In any reaction where one substance is oxidized, another must be reduced: the term redox reaction is used to explain this.

As the reaction of zinc (Zn) in aqueous acid,

 

109_Untitled.png

 

where zinc metal is oxidized to Zn2+, and hydrogen reduced from H+ to H2; and the reduction of zinc oxide by carbon,

 

1844_Untitled.png

 

where zinc is reduced from ZnO to the metal, elemental carbon is oxidized to CO, and oxygen, combined with a less electronegative element on both sides, is not oxidized or reduced.

 

Posted Date: 7/21/2012 8:52:48 AM | Location : United States







Related Discussions:- Oxidation and reduction, Assignment Help, Ask Question on Oxidation and reduction, Get Answer, Expert's Help, Oxidation and reduction Discussions

Write discussion on Oxidation and reduction
Your posts are moderated
Related Questions
when 100ml of M/10 h2so4 is mixed with 500ml of M/10 naoh then nature or resulting solution and normality of excess of reactant left is


Q. Show the chemical properties of Uranium? Uranium is mainly extracted from pitchblende. The concentrated ore (pitchblende, U 3 O 8 ) is washed and then fused with sodium nitr

what rules and principles are violated in the following electronic configuration: 1s22s3

why water molecule forms covalent bond even though it dissociates into ions

Cross linked polymers : 1. These are polymers where monomers unit are crosslinked together to make a three dimensional network polymers. 2. These kind of polymers are hard,


What is the difference among multimolecular and macromolecular colloids? Give one example of each type. How are associated colloids dissimilar from these two types of colloids?

Why does NO2 dimerise? a) Give an example of linkage isomerism. b) A solution of KOH hydrolyses CH3CH2CH2CH2Cl and CH3CH2CH2Cl. Which one of these is more easily hydrolysed?

Atoms in the water molecule are linked by: (1) Electrovalent bond                  (2)Covalent bond   (3) Coordinate covalent bond    (4) Odd electron bond Ans: Cov