Qualification > Reference Material
help!! plz
~Dazzling Star~:
--- Quote from: Deadly_king on October 06, 2010, 07:03:32 am ---Oxides : There are four types of oxides.
1. A basic oxide is a metallic oxide that will react with an acid to form salt and water only.(Example :MgO)
Equation : MgO + 2HCl ----> MgCl2 + H2O
2. An acidic oxide is a non-metallic oxide that will combine with water to form an acid.(Example : SO3)
Equatio : SO3 + H2O ---> H2SO4
3. An amphoteric oxide is a metallic oxide that has both basic and acidic properties, that is it can behave as an acid as well as a base.(Example : PbO)
Equation : (i) PbO + 2HCl ----> PbCl2 + H2O
(ii) PbO + Ca(OH)2 + H2O ----> Ca[Pb(OH)4]2
4. A neutral oxide is a non-metallic oxide that has neither basic nor acidic properties.(Example : CO2)
I guess that's all you need to know concerning oxides. :)
--- End quote ---
thx soo much....can u tell me abt titration??
~Dazzling Star~:
--- Quote from: Ari Ben Canaan on October 06, 2010, 03:34:49 am ---If the two coordinates of a line are (1,2) and (6,5) then X1 = 1 X2 = 6 and Y1 = 2 and Y2=5.
You see the red line how it crosses the y axis ? The coordinates at which it crosses is given to be (0,7)
Therefore the y-intercept is 7.
--- End quote ---
ok i get it now thx.... could you tell me abt graphing function?
elemis:
--- Quote from: ~Dazzling Star~ on October 06, 2010, 04:34:54 pm ---
thx soo much....can u tell me abt titration??
--- End quote ---
Basic titration involves neutralization of an acid with an alkali.
The idea behind the experiment is to determine the concentration of the either the acid or alkali.
I'm sure your textbook has something more on it and you could check youtube for some example titrations being carried out,
elemis:
--- Quote from: ~Dazzling Star~ on October 06, 2010, 04:37:30 pm ---ok i get it now thx.... could you tell me abt graphing function?
--- End quote ---
Welcome.
Umm, could you specify what you dont understand ? Like give me an example question.
~Dazzling Star~:
--- Quote from: Ari Ben Canaan on October 06, 2010, 04:39:26 pm ---Welcome.
Umm, could you specify what you dont understand ? Like give me an example question.
--- End quote ---
ok, i really have no idea can u give me an example past paper question??
thx again
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