I am a student of chemistry of grade 8.
I know that P+O2----->P2O5, but i dont know if
P2O5----->P+O2. I would b really glad if I know this answers as quickly as posssible.
2007-08-24 23:33:41 · 6 answers · asked by Toyesh S 1 in Science & Mathematics ➔ Chemistry
The people above are right- your equations are not balanced and is incorrect.
Anyway, in chemical energetics, it is theoretically possible to reverse the reaction, because all reactions have a forward and backward reaction graph, of which they both have a different activation energy.
However, in reality, we need to take into consideration if the substance we form are actually reversible- that is to say is the backwards activation energy too high that is impossible to create that much energy? Or the substance we made has been turned into a compound?
So to answer your question, no it is not possible because one thing the backward activation energy is too high and the forward reaction is an irreversible reaction.
2007-08-25 05:04:00 · answer #1 · answered by SL 4 · 0⤊ 0⤋
P O2 P2o5
2016-11-09 03:32:04 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Phosphorous has very high affinity for Oxygen. That is why Phosphorous reacts with Oxygen very spontaneously, and forms P2O5. This reaction is Oxidation of Phosphorous.
To reduce P2O5 to Phosphorous we need strong reducing agent and suitable condition. Only Carbon can remove Oxygen from P2O5 at high temperature. The reaction is:
2P2O5 + 10 C -------> P4 (Yellow or White Phosphorous) + 10 CO
But
2P2O5 + 5 C ---------> P4 + 5CO2 is not possible.
There is no question of
2P2O5 -----------------> P4 + 5O2.
Even pyrolysis at very high temperature with plasma do not yield P from P2O5.
2007-08-25 06:57:15 · answer #3 · answered by Abhijit Purohit 4 · 1⤊ 0⤋
The equation is not balanced by the way...
Anyway, the process is hard to reverse (in your case the formation reaction actually released a large amount of energy, and so you'll need energy to break it and this is not readily available), and a few steps like electrolysis that can reverse such reactions.
Hope that was able to help...
2007-08-25 02:15:20 · answer #4 · answered by Anjo 2 · 0⤊ 0⤋
If you heat it enough, you can make the reaction go backwards. All chemical reactions are, at least in principle, reversible. However, phosphorus-oxygen bonds are among the strongest bonds in existence, so it's not an easy feat.
2007-08-25 05:09:44 · answer #5 · answered by Art V 3 · 0⤊ 0⤋
It would take a large amount of energy to reverse the formation of phosphorus(V) oxide..
P4 + 5O2 -----> P4O10 is the correct equation.
2007-08-24 23:38:25 · answer #6 · answered by Gervald F 7 · 0⤊ 0⤋
No, this is an irreversible reaction.
Coal can be converted into CO2, but CO2 can't become coal.
2007-08-25 00:20:28 · answer #7 · answered by pereira a 3 · 1⤊ 0⤋
2P + 5/2O2 -> P2O5 oooorrrrrr 4P + 5O2 -> 2P2O5
2016-03-13 00:29:54 · answer #8 · answered by Anonymous · 0⤊ 0⤋