Qualification > Sciences
CHEMISTRY PAPER 1 HERE
girl_92:
--- Quote from: Clem on June 11, 2009, 02:11:44 pm ---Guuuyysss can someone please help me with november 2007 no. 21, shouldnt' it form a blue percepitate??
--- End quote ---
only cu sulfate is blue not all compounds of copper are blue
girl_92:
--- Quote from: madee on June 11, 2009, 02:15:04 pm ---
--- Quote from: Clem on June 11, 2009, 02:11:44 pm ---Guuuyysss can someone please help me with november 2007 no. 21, shouldnt' it form a blue percepitate??
--- End quote ---
only cu sulfate is blue not all compounds of copper are blue
--- End quote ---
did u get it now
sundars:
The answer is C
Bani:
--- Quote from: sundars on June 11, 2009, 02:19:22 pm ---The answer is C
--- End quote ---
heyy, please help....
O/N 2007, paper 1, Q 11
esso:
An aqueous solution contains barium iodide.
It is possible to obtain a solution that contains Ba2+(aq) but no I–(aq) by adding ……1…… until no
more ……2…… precipitate forms.
Which words correctly complete gaps 1 and 2?
1 2
A aqueous lead(II) nitrate white
B aqueous lead(II) nitrate yellow
C dilute sulphuric acid white
D dilute sulphuric acid yellow
help please...need an explanation..
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