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Chemistry paper 12 discussion!!!!!!!!!!

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The overhead cable IS aluminium. But i wrote copper as the Elesctrode. I think its wrong but as it SADI SCHOOL it cant be platinum. They wont be able to use it. And copper doesnt reach with HCL.
HEAT ISNT NEEDED FOR STEAL. They said IRON from BLAST furnace which is already hot so no heat. I checked with my teacher, I wrote statement 2 doesnt explain which is B. And only zinc Dissolves which is D. I think 1 or 2 mistakes maximum.
 
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noooo but didn`t they mention barium and silver ??
barium --->sul;fate
silver --->chloride
...?
 
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Its not analysis bro. You need the solubility table.
And yes Barium PRODUCES a precipitate in sulfate. And silver + chloride produce. Its to do with solubility
 
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Outofideaz said:
i wrote the same answers .. :D
wat abt the nitrate, sulphate and chloride question??
Its D. Chloride, Nitrate, or Sulfate.
As, it may have silver sulfate, and barium nitrate. U get what I mean?
 
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WayneRooney10 said:
Outofideaz said:
i wrote the same answers .. :D
wat abt the nitrate, sulphate and chloride question??
Its D. Chloride, Nitrate, or Sulfate.
As, it may have silver sulfate, and barium nitrate. U get what I mean?

It's B, as my teacher confirmed this with me..


The green house one was P, Q and the other one, which had methane or CO2, I think I put C.
 
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hey xlshtar wat was the green house question i cant remember properly ................
 
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Heat isnt required. Google it. They said IRON FROM A BLAST FURNACE. i checked in my book. it says only CaO and O2 are needed. In an oxygen chamber, its already hot, and its an exothermic reaction, giving it heat would mean its endothermic wouldnt it, Wait the exam is over. Lets focus on paper 3 and leave the forum. What will it benefit us if we discuss it any longer.
 
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Gunner1995 said:
Heat isnt required. Google it. They said IRON FROM A BLAST FURNACE. i checked in my book. it says only CaO and O2 are needed. In an oxygen chamber, its already hot, and its an exothermic reaction, giving it heat would mean its endothermic wouldnt it, Wait the exam is over. Lets focus on paper 3 and leave the forum. What will it benefit us if we discuss it any longer.

so wht was the ans to tht???
i did c which is wrong anyway!!!
 
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respect1 said:
What did the constituent mean? in that petroleum question?? I wasnt sure so i think i checked methane :S


do u mean the main constituent of natural gas????
i think i did methane too!!
 
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