Chemistry qn
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Is Ba(OH)2 (Barium Hydroxide) and NH3 ( aqueous ammonia) alkali???
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yep
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An alkali is a base.
But a base is not an alkali
a base is an hydroxide, oxide of metal.
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why is NH3 an alkali? is it even a base?
and for Ba(OH)2...why is it an alkali? is it soluble in water?
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ohoh.. never see alkali..
yep as kenneth says. an alkali is a base that is soluble in water
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Originally posted by ohnoez!:
why is NH3 an alkali? is it even a base?
and for Ba(OH)2...why is it an alkali? is it soluble in water?
NH3 in aqueous state is alkali. It is an exception.
Ba(oh)2 is an alkali. Just know that alkali = oh or ofor eg: naoh (sodium hydroxide)
No. Most metal oxides are insoluble in water.
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lol roflmao i am getting more confused....my teacher say Ba(OH)2 not alkali then i read textbook it says it is and that all alkali are soluble in water and now you say they dont.....lol i gonna fail chemistry liao XDXD
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from what i know. an alkali is a base that dissolves in water. so yes ammonia is an alkali because it dissolves in water. base is a bigger group. but usually used to refer to insoluble bases like metal oxides.
*sorry english typo*
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sorry for asking so much.....wont Ba(OH)2 form a protective layer of oxide in water then wont be soluble?
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Originally posted by tinuviel07:
from what i know. an alkali is a base that dissolves in water. so yes ammonia is an alkali because it dissolves in water. base is a bigger group. but usually used to refer to insoluble alkalis like metal oxides.
how can alkalis be insoluble?
i thought insoluble metal oxides are just bases? -
Originally posted by ohnoez!:
sorry for asking so much.....wont Ba(OH)2 form a protective layer of oxide in water then wont be soluble?
All hydroxides are insoluble EXCEPT those of ammonium, barium and alkali metal (Group I) cations.
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both are alkalis
hydroxide means alkalis
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ohnoez is sec what?
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Originally posted by kenn3th:
ohnoez is sec what?
sec 4 -
Originally posted by tinuviel07:
All hydroxides are insoluble EXCEPT those of ammonium, barium and alkali metal (Group I) cations.
lol....Ba(OH)2 react with water form wat?Ba(OH)2 + H2O ->????
so ALL alkali are soluble?
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Bee stings are acidic while wasp stings are alkali i got tt question for my chem test ... I noe NH3 is but Ba(OH)2 i dunno ...
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Post at wrong thread.
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Originally posted by ohnoez!:
sec 4
shud be same text bookturn to page 252 onwards read!!!!
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Originally posted by ohnoez!:
lol....Ba(OH)2 react with water form wat?Ba(OH)2 + H2O ->????
so ALL alkali are soluble?
dissociates into Ba2+ and OH- ions..yup all alkalis are soluble. alkalis are soluble bases. bases is the general group
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my book pg 252 is abt rusting lol.....thx everyone for the help lol....any idea why my teacher say Ba(OH)2 is not alkali?
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Yep, it's just like acid when reacts with water, then it turns into an acid. if not, acid in solid state will not turn damp blue litmus red
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Originally posted by ohnoez!:
my book pg 252 is abt rusting lol.....thx everyone for the help lol....any idea why my teacher say Ba(OH)2 is not alkali?
no. Barium Hydroxide is an alkali. -
Originally posted by ohnoez!:
my book pg 252 is abt rusting lol.....thx everyone for the help lol....any idea why my teacher say Ba(OH)2 is not alkali?
well your teacher say wrongly? slip of the tongue perhaps -
Originally posted by tinuviel07:
well your teacher say wrongly? slip of the tongue perhaps
maybe ts hear wrongly -
lol thx for the enlightenment...