and also, what makes it acidic or basic? my teacher says if the oxygen is formed with a metal it is basic and a nonmetal it is acidic, but what if you have like PbHO or something with a metal AND a nonmetal paired with oxygen? im so confused and cant find help in my textbook or online :(
2007-09-25 10:02:28 · 6 answers · asked by Lauren 1 in Science & Mathematics ➔ Chemistry
There are metal oxides like iron oxide (rust) Fe3O4, or calcium oxide, CaO stable compounds that are rather basic when you put then in contact with water
CaO + H2O --> Ca(OH)2 (CaO) is lime
Then there are organic oxides. These are always charged species as salts of an alcohol:
2CH3CH2OH + 2Na --> 2CH3CH2ONa + H2(g)
CH3CH2O-Na+
the species CH3CH2O- is called an alkoxide or an oxide of an alkane.
There are other examples of Oxides in the wiki reference O-2, peroxides O-O•, and things with as ions like:
SO4-2 which are also oxides...
2007-09-25 10:16:39 · answer #1 · answered by Dr Dave P 7 · 0⤊ 0⤋
NO!!!
When oxygen is combined with a metal is it a BASE
When oxygen is combined with a non-metal is is ACIDIC
BASES are formed from GRP 1,2,3 and transition metals
examples are Na2O, Sodium Oxide
MgO Magnesium Oxide
Al2O3 (Aluminium Oxide - it exhibits both basic and Acidic properties depending on its environment - amphoteric.
CuO Copper Oxide
NB An ALKALI is a soluble BASE.
ACIDIC oxides are formed from GRP 6 & 7 non metals.
Exaamples are CO2 (Carbon Dioxide) forms carbonic acid
SO2 (Sulphur Dioxide) forms sulphurous acid (H2SO3)
OCl2 forms HOCl & HCl which are both acids.
Your substance PbHO I don't think exists. However, Pb(OH)2
Lead hydroxide does. It is basic in character.
When a metal is present, generally the character is basic.
2007-09-25 17:21:21 · answer #2 · answered by lenpol7 7 · 0⤊ 0⤋
An Oxide has Oxygen in a ionic state or an oxidation state of -2. For example Ethanol has oxygen, but is clearly not an oxide. Like, Na2O is an oxide.
2007-09-25 17:05:39 · answer #3 · answered by Steve C 7 · 0⤊ 0⤋
Lauren,
The number of oxygens depends on the oxidation state of the other elements in the compound. Any compound in which oxygen appears in a -2 oxidation state with one or more other elements can be referred to as an oxide.
2007-09-25 17:06:25 · answer #4 · answered by mnrlboy 5 · 0⤊ 0⤋
Depends on what material oxadises.
Rust is iron oxide.
The white powder on old magnesium is magnesium oxide.
2007-09-25 17:06:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
here and easy factual list for you
http://en.wikipedia.org/wiki/Oxide
2007-09-25 17:06:00 · answer #6 · answered by The old man 6 · 0⤊ 0⤋