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http://www.xtremepapers.me/CIE/Cambridg ... _qp_12.pdf
15 can smbdy tell me why is it c??? :x
15 can smbdy tell me why is it c??? :x
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chem quick qsn plzzzz
- Thread starter Ramosk95
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The filtrate formed is Lead Iodide... Its is yellow in color... When HCl is added to it... I guess Lead Chloride is formed which is white...
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The filtrate is barium nitrate........
sulphuric acid reacts with it to form barium sulphate.
remember the test for sulphate ions.
sulphuric acid reacts with it to form barium sulphate.
remember the test for sulphate ions.
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so this is because cl is more reactive than Iodide !CaptainDanger said:
thnx
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but how do we know that they would react to produce barim sulphate??Thampi4 said:
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I guess Ramosk95 is right there... They just react its a reaction... Along with Barium Sulphate, Nitric Acid is also produced...
Ramosk95 said:
Even if, for some reason, you've never heard of that reaction before, the question tells you that it's added until no more precipitate forms. There is a reaction, the only possible reaction that could be done is displacement, forming lead iodide, which is yellow.
In the second part, he also tells you that a precipitate forms. It has to be barium sulfate, which, because it's not a transition element, is white.
So the answer is c.