Hi do anyone has a list of acidic/basic oxides??

amusing_dick SG

ok i understand the concept between metals/non metals oxides but
cause im quite confused although both examples like (nitrogen dioxide and nitrogen monoxide) but only nitrogen dioxide is acidic..?nitrogen monoxide is neutral ?

teraexa SG

Sulphur dioxide IS acidic.

Acidic oxides are those covalent oxides (eg SiO2, SO3, SO2, NO2) while basic oxides are mainly ionic oxides (eg MgO, CaO, Na2O).

However, there are some oxides that are amphoteric (acidic and basic). At O level, there are only 3: Zinc oxide, Lead Oxide and Aluminium Oxide. At A level, ionic oxides with a high degree of covalency are considered to be amphoteric.

viopurp SG

METALLIC oxides are either BASIC or AMPHOTERIC.
But the amphoteric oxides which u need to know for O-levels are just:
- ZnO
- Al2O3
- PbO

So the rest will just be basic oxides.

NON-METALLIC oxides are either ACIDIC or NEUTRAL.
But the neutral oxides which u need to know for O-levels are just:
- CO
- H2O
- NO

So the rest will just be acidic oxides.

Hm.
Basically, just need to remember the exceptions?
Follow this then your doubts should be cleared le bah?

lpx88 SG

Alright..so we just need 2 know which are metal and which are non metal then we can just deduce?

kenn3th SG

SEAB website check under O-level then which year and your sub code

SexyChin SG

eh, you want o level or a level explanation?

^tamago^ SG

note where they lie on the periodic table while u read the list. ignore transition metals for this except Zn.
Amphoteric - Be, Al, Ga, Sn, Pb, Zn(trans)
left of this 'line' - basic
right of this 'line' - acidic

amusing_dick SG

o lvl in fact i juz need an explaination is y Nitrogen monoxide is neutral and nitrogen dioxide is acidic.thx. my teacher couldnt answer this.. Rolling Eyes

allentyb SG

wiki can be your very good friend Very Happy

amusing_dick SG

it explains what is acidic oxide but dosent explain why nitrogen monoxide isnt..