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Although, Phosphoric isn't mentioned, it is added when the titration is done practically. It is...
Although, Phosphoric isn't mentioned, it is added when the titration is done practically. It is recommended to have done such practicals and I guess Cambridge expects us to know the practical aspects of chemistry and apply that knowledge in answering the question in th atp- Dream.Eater
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ICC World T20 2014
An epic turn of the tables than to Herath's awesome bowling....:D- Dream.Eater
- Post #237
- Forum: Off Topic
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What I meant previously was that you can't use that reasoning in "any" sort of question
What I meant previously was that you can't use that reasoning in "any" sort of question- Dream.Eater
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Einstein's Riddle
quote="David Hussey, post: 731177, member: 14780"]idk :/ He will put a small fence around him and declare to be standing outside the fence:D- Dream.Eater
- Post #20
- Forum: Off Topic
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Therefore, you cant use the compound colour reasoning in this sort of question. I'm not saying...
Therefore, you cant use the compound colour reasoning in this sort of question. I'm not saying your wrong but its just that it cannot be applied to any question- Dream.Eater
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A very similar Q came in 2009 MJ P4. Here,it was scrap iron and KMnO4. So there are no compounds...
A very similar Q came in 2009 MJ P4. Here,it was scrap iron and KMnO4. So there are no compounds but still the end point colour is pink due to H3PO4 being added to neutralize the rusty brown colour- Dream.Eater
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Einstein's Riddle
A good riddle, not by Einstein though..... A farmer challenges an engineer, a physicist, and a mathematician to fence off the largest amount of area using the least amount of fence. The engineer made his fence in a circle and said it was the most efficient. The physicist made a long line and...- Dream.Eater
- Post #11
- Forum: Off Topic
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Einstein's Riddle
All you need is a pen, paper and some common sense- Dream.Eater
- Post #10
- Forum: Off Topic
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Einstein's Riddle
Come on!:p Just cause you didn't get it that doesn't mean others cant:D- Dream.Eater
- Post #6
- Forum: Off Topic
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I think your referring to the 3rd Q in 2011 ON The ans is B because if you use anything other...
I think your referring to the 3rd Q in 2011 ON The ans is B because if you use anything other than water the no of moles of the analyte would change.Thus,you would have ether more or less moles of what should be there in 25cm3. so, the only answer that uses water only is B. Water may dilute it...- Dream.Eater
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This is because the rusty brown is like an interference in finding the colour change. So at the...
This is because the rusty brown is like an interference in finding the colour change. So at the end point, EXCESS KMnO4 is added so pink is seen at the end point. Although, nothing is mentioned about phosphoric acid in the question, it is added when doing this titration practically. Therefore...- Dream.Eater
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Alright, so its a titration between FeSO4 and KMnO4. I think you thought that the colour change...
Alright, so its a titration between FeSO4 and KMnO4. I think you thought that the colour change is from pale green to rusty brown. But instead of rusty brown its pink. The reason is this. Practically, if you do this titration, you would get punk at the point. This is because you add phosphoric...- Dream.Eater
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Biology; Chemistry; Physics: Post your doubts here!
Not in the syllabus- Dream.Eater
- Post #12,683
- Forum: O-Levels / GCSEs / IGCSE