oxides/hydroxides/water

[max.yevs]

why are all the metal oxides insoluble in water...

 

and is that the reason why metals generally form hydroxides in water instead of oxides... i.e. 2Li + 2H2O > 2LiOH + H2

not 2Li + 2H2O > 2LiO2 + 2H2

---

Merged post follows:

Consecutive posts merged

ah ok i know why hydroxides are more favorable then oxides..

 

why should a metal, i.e. lithium, have to share its oxygen with another lithium, when it could share it with a hydrogen, which doesnt reduce oxygen's oxidizing power as much, allowing oxygen to be a stronger oxidizer to lithium...

 

forget i posted this post

[Theophrastus]

In the part regarding metal oxides, you were right to conclude that these are insoluble, due to the fact that they form hydroxides, as is demonstrated with copper, below:

 

Cu(II)O + H2O > Cu(OH)2

 

In regards to your second question regarding lithium, I am rather unsure what you mean, however, I'll give it ago. I you are reffering to the particular instance, you are right to say that LiOH is favourable, however air has a rather low hydrogen content, most of which is found in the form of water vapour, as such, the lithium, would form lithium oxide with no other option. Is that the information you required, or, what was your intent?

 

-Theo