Qualification > Sciences
CHEMISTRY PAPER 1 HERE
Triple_A:
PPL.......Lead Oxide is yellow!!
if it was Iron Oxide then it wont be yellow.......it would be green or reddish brown depend on the valency of iron
....:
I stand corrected.
Indeed, lead (II) oxide is yellow and lead (I) oxide is dark brown. And lead (II) carbonate is, undoubtedly, white. Thus answer has to be lead.
Thank you Triple_A.
sweetest angel:
--- Quote from: Priceless on June 11, 2009, 10:34:02 am ---ok itz defi sodium 4 da 1st
but guyz 4 da 2nd...itz 'b'.....itz using copper electrodes wich r active electrodes.......im sure u hv don't da purification of copper using electrolysis...itz da same thng
n 3rd.....im not sure but i thnk itz sodium bcuz itz an alkali wich forms white compounds....
plz nid or any1...correct me if im wrong.....thnku
--- End quote ---
sry ma bad i didnt read copper electordes in da question :-[
mizuki:
hey guys id appreciate some help.may june 03 q21
water is added to dilute H2SO4 of pH4.What is the resulting pH?
the answer is 6,but why?i know it has something to do with the hydroxide or hydrogen ions in water which change its pH....
girl_92:
--- Quote from: Triple_A on June 11, 2009, 11:53:02 am ---PPL.......Lead Oxide is yellow!!
if it was Iron Oxide then it wont be yellow.......it would be green or reddish brown depend on the valency of iron
--- End quote ---
r u sure der was sum1 astar sumthin he said he is a private tutor i so want him to answer this n By the way whr r da big brains those ppl nid n every1
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