Redox (reduction–oxidation, pronunciation: RED-oks or REE-doks) is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species (the reducing agent) undergoing oxidation (losing electrons) while another species (the oxidizing agent) undergoes reduction (gains electrons). The chemical species from which the electron is removed is said to have been oxidized, while the chemical species to which the electron is added is said to have been reduced. In other words:
Oxidation is the loss of electrons or an increase in the oxidation state of an atom, an ion, or of certain atoms in a molecule.
Reduction is the gain of electrons or a decrease in the oxidation state of an atom, an ion, or of certain atoms in a molecule (a reduction in oxidation state).Many reactions in organic chemistry are redox reactions due to changes in oxidation states but without distinct electron transfer. For example, during the combustion of wood with molecular oxygen, the oxidation state of carbon atoms in the wood increases and that of oxygen atoms decreases as carbon dioxide and water are formed. The oxygen atoms undergo reduction, formally gaining electrons, while the carbon atoms undergo oxidation, losing electrons. Thus oxygen is the oxidizing agent and carbon is the reducing agent in this reaction.Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, oxygen is not necessarily included in such reactions, as other chemical species can serve the same function.Redox reactions can occur relatively slowly, as in the formation of rust, or much more rapidly, as in the case of burning fuel. There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO2) or the reduction of carbon by hydrogen to yield methane (CH4), and more complex processes such as the oxidation of glucose (C6H12O6) in the human body. Analysis of bond energies and ionization energies in water allow calculation of the redox potentials.
totally stuck!
hey guys and girls, I'm having some serious problems with this redox reaction titration thing i just did!
Basically i titrated a sodium thiosulphate solution with potasium iodate(v), sulphuric acid, potassium iodide and some starch.
I've worked out the molarity of my sodium...
This is the 2nd problem on a HW sheet I have. I don't have any particular problems with it but I'm just making sure I'm doing these right:
Complete (add H20, H+ or OH- as appropriate) and balance the following equations. Show all half reactions.
a. NO_3^- + Ag \rightarrow Ag^+ + NO_2...
Hi ppl. I'm asked a question: Iron filings are added to a solution containing the ions Cu2+, Fe2+, Fe3+, H30+ and Zn2+. Deduce what reactions occur from the standard electrode potentials. Is this simply asking me which will change Fe2+ to Fe3+ and vice-versa by reduction or oxidation do you...
Hello,
Anyone know something about Molybdenum(V) ions?
1n our university, we instruct an experiment to students, in which ammonium molybdate (\displaystyle (NH_4)_2MoO_4) is reacted with tin chloride with hydrochloric acid. A redox reaction occurs, to my knowledge it should be like that...
Hi
I got the following redox-process:
IO_3^{-} (aq) + HSO_3^{-}(aq) \rightarrow I_2(aq) + SO_4^{2-}(aq)
How do I balance it?
Any hits will be apriciated :)
Sincerely
Fred
Addison-Wesley
CHEMISTRY
Balancing Redox equations (pg. 607-8)
Step 4: Make the total increase in oxidation number equal to the total decrease in oxidation number by using appropriate coefficients.
Practice problem 10b.
KClO (s)==>KCl(aq) + O2(g)
When I did step 4 of this...
Addison-Wesley
CHEMISTRY
Balancing Redox equations (pg. 607-8)
Step 4: Make the total increase in oxidation number equal to the total decrease in oxidation number by using appropriate coefficients.
Practice problem 10b.
KClO (s)==>KCl(aq) + O2(g)
When I did step 4 of this...
Please help me w/ the 2 redox equations. Show me how to assign the oxidation # and how to do it please, especially the 1st problem. The problems are attached. Thank you very much for ur time.
Please help me w/ the 2 redox equations. Show me how to assign the oxidation # and how to do it please, especially the 1st problem. The problems are attached. Thank you very much for ur time.