Pages

▼

Thursday, March 7, 2013

Download HSEB Notes of Chemistry | Elctrochemical Reaction | Extra Reference | E-Book | Class 12

CHEMISTRY | EXTRA REFERENCE | E-BOOK
DOWNLOAD HSEB NOTES ON ELECTROCHEMICAL REACTION | CHEMISTRY
CLASS : 12
File Type : DOC
Size : 360 KB
Download

Click on "Download" to start downloading file.

Redox Reagents 
In  the  reaction  15.1  above,  the  magnesium  is  being  oxidized  by  the  chlorine, and the chlorine is being reduced by the magnesium.  The magnesium undergoes and  the  chlorine  undergoes  reduction. Therefore  Chlorine  is  the  Oxidizing  agent!  An  oxidizing  agent  causes  the other  species  with  which  it  is  reacting  to  be  oxidized.    In  this  process,   the oxidizing  agent  accepts  electrons  and  thus  becomes  reduced.
Magnesium  is  the  Reducing  agent!    A  Reducing  agent   causes  the  other species  with  which  it  is reacting  to  be  reduced.   In  this  process,  the  reducing agent  donates  electrons  and  thus  becomes  oxidized. To  summarise,   magnesium  is  a  reducing  agent  and  in  the  reaction,   it  is oxidized  because it  donates  its  electrons  and  increases  its  oxidation  number  (it becomes  more  positive).   Chlorine  is  an oxidizing  agent  and  in  the  reaction,  it is  reduced  because  it  accepts  electrons  and  decreases  its  oxidation  number  (it becomes  more  negative).

Balancing  Redox  reactions
The reaction of species involves the transfer of electrons and involves numerous steps and perhaps more than two atoms.  The ion-electron method can be used successfully to balance multi-atomic redox reactions involving numerous electron  transfers. 

Download it to read more...

Down't forget to download :
at

No comments:

Post a Comment

Don't forget to leave your comment.