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page 263 org made easy book
Fact + correction for mistakes
btm of page. 2nd cpd shld be named butan-2-ol. last cpd shld be named 2-methylbutan-2-ol.
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Originally posted by Flying grenade:
page 263 org made easy book
Fact + correction for mistakes
btm of page. 2nd cpd shld be named butan-2-ol. last cpd shld be named 2-methylbutan-2-ol.
I don't doubt you have good intentions, has it occurred to you publicly pointing out the typos in a book might just annoy the author? And would JC students really take note of each typo error you point out in this thread, excitedly look it up in their book to make the corrections, and each time exclaim, "Thank you Flying Grenade!"?*shrugs* It's up to you (if you want to continue doing so). (For any action) if you really feel what you're doing is 'right' (in reality there is no absolute right or wrong ; there is only legality, ethics and cosmoethics ; morality is an illusion), ie. if you think it's helpful to others, then you gotta stand by yourself and do what you feel is right. But of course, what's 'right' at one time, may not be always 'right' at other times. What's 'right' for one person may not be 'right' for another (and the same action taken by 2 different individuals may have different karmic consequences, both internal and external). And attitudes and ethics can and do evolve over time. Einstein may not have fully appreciated that his theory of Relativity applies to more than physics, but to ethics as well (ie. so-called moral relativism vs moral absolutism vs moral consequentialism, etc).
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Originally posted by UltimaOnline:
"What is protonated alcohol?"-_-" If you don't even know this, how are you gonna sit for your A level exams in 2 months' time? -_-"
George Chong merely left out 1 curved arrow (the elimination of H2O+ as H2O), otherwise the rest of the mechanism is correct. But *you* totally screwed up his mechanism with your erroneous curved arrows.
If you don't understand his mechanism. then you need your school teacher or private tutor to explain the mechanism to you in-person. Move on.
*exclamation* yes , i figured out this mechanism alr, for pg 196.
the one missing curved arrow is at the first step. arrow from C-O bond to the O+ atom. (:
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Originally posted by UltimaOnline:
I don't doubt you have good intentions, has it occurred to you publicly pointing out the typos in a book might just annoy the author? And would JC students really take note of each typo error you point out in this thread, excitedly look it up in their book to make the corrections, and each time exclaim, "Thank you Flying Grenade!"?*shrugs* It's up to you (if you want to continue doing so). (For any action) if you really feel what you're doing is 'right' (in reality there is no absolute right or wrong ; there is only legality, ethics and cosmoethics ; morality is an illusion), ie. if you think it's helpful to others, then you gotta stand by yourself and do what you feel is right. But of course, what's 'right' at one time, may not be always 'right' at other times. What's 'right' for one person may not be 'right' for another (and the same action taken by 2 different individuals may have different karmic consequences, both internal and external). And attitudes and ethics can and do evolve over time. Einstein may not have fully appreciated that his theory of Relativity applies to more than physics, but to ethics as well (ie. so-called moral relativism vs moral absolutism vs moral consequentialism, etc).
no problem. thanks ultima for your replies, in and out of chemistry. i appreciate every single letter and word of it
definitely agree with Consequentialism and relativism.
yes i think its good to just put out the correct corrections online. i think and hope can benefit many.
also since i put in effort to proofread, which help my learning and setting my book right by doing necessary corrections, just put online for all to refer
i think it's a very good book. I've learn alot from it.
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[Fact]
Illustrated Glossary of Organic Chemistry - Term. Periplanar: Lying in the same plane, i.e., coplanar.
harvard : The term "periplanar" was coined by Klyne and Prelog in 1960 to define a flexible torsional angle of 0 ± 30° (syn) or 180 ± 30° (anti). The prefix peri, derived from the Greek for "near", was chosen to make the meaning"approximately planar".
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deuterium vs hydrogen leaving group
https://www.quora.com/Why-is-the-deuterium-eliminated-in-this-E2-reaction-instead-of-the-proton-in-the-ACS-study-guide-for-Organic-Chemistry
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page 367
for delocalisation of e- into b.ring, the hybridisation of N atom can be , or is, between sp2 and sp3?
or is it must be sp2 like C atom?
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page 377
will the Ring in Atropine exhibit aromaticity? it has alternating single and double bonds
if required to draw in exams, can i draw a circle, representing delocalised pi e- cloud, like benzene?
should benzene be included as a functional group, as asked by the qn to name all functional groups present?
thanks
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Originally posted by Flying grenade:
page 367
for delocalisation of e- into b.ring, the hybridisation of N atom can be , or is, between sp2 and sp3?
or is it must be sp2 like C atom?
Go ask your school teacher or private tutor. Edart sterces.
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Originally posted by Flying grenade:
page 377
will the Ring in Atropine exhibit aromaticity? it has alternating single and double bonds
if required to draw in exams, can i draw a circle, representing delocalised pi e- cloud, like benzene?
should benzene be included as a functional group, as asked by the qn to name all functional groups present?
thanks
Yes. Yes. Yes. -
thanks for yr reply
page 392
Esub of NO2+ to chloromethylbenzene, the NO2 can sub at any position??
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does zwitterion only occur at isoelectric points only? or zwitterions occur at any pH, just that the amount of zwitterions at isoelectric points is the greatest?
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at isoelectronic point, the zwitterion is the dominant form of the amino acid
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Originally posted by Flying grenade:
thanks for yr reply
page 392
Esub of NO2+ to chloromethylbenzene, the NO2 can sub at any position??
No. You have to decide for yourself (based on understanding) if CH2Cl is ortho-para or meta director, unlike Singapore JC students (based on blind memorization).Ask your school teacher or private tutor, move on. Edart sterces.
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Originally posted by Flying grenade:
does zwitterion only occur at isoelectric points only? or zwitterions occur at any pH, just that the amount of zwitterions at isoelectric points is the greatest?
What do you think? Isn't it obvious?!? (well maybe not to Singapore JC H2 students). -
Originally posted by UltimaOnline:
No. You have to decide for yourself (based on understanding) if CH2Cl is ortho-para or meta director, unlike Singapore JC students (based on blind memorization).Ask your school teacher or private tutor, move on. Edart sterces.
both CH3 and Cl are ortho para directors
now the Cl connected to CH2 and then connected to Benzene. can't figure out overall if CH2Cl is e- donating or withdrawing.
dun think Cl will be that powerful as to manage to withdraw e- from benzene through one CH2 unit.
hence my guess is overall CH2Cl is weakly activating ,and hence act as an ortho para director
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Originally posted by Flying grenade:
both CH3 and Cl are ortho para directors
now the Cl connected to CH2 and then connected to Benzene. can't figure out overall if CH2Cl is e- donating or withdrawing.
dun think Cl will be that powerful as to manage to withdraw e- from benzene through one CH2 unit.
hence my guess is overall CH2Cl is weakly activating ,and hence act as an ortho para director
Ask your school teacher or private tutor, move on. Edart sterces. -
page 453
addition of polar organic solvents will denature proteins
how about inorganic solvents like water?
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page 455
part f
so like proteins are soluble in water, and that's about it? wouldn't polar water "interfere with the H bonding between R groups" , as ethanol would?
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page 455
example 11.14
what's the first reaction? substitution of Br from H in Alkane?
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Originally posted by Flying grenade:
page 453
addition of polar organic solvents will denature proteins
how about inorganic solvents like water?
Then you die liao lor. All the proteins in your body kena denature liao. -
Originally posted by Flying grenade:
page 455
part f
so like proteins are soluble in water, and that's about it? wouldn't polar water "interfere with the H bonding between R groups" , as ethanol would?
It 'interferes' until you get your current desired configuration of proteins, supporting life specifically in aqueous environments only. Billions of years of evolution, yo.Of course, both Creationism and Darwinism are oversimplified and incomplete. The truth is more akin to Interventionism, and evolution continues hand-in-hand with higher guidance, at all levels. Just as human geneticists would biotechnologically intervene in the genomes of other species for various purposes of genetic modification and even creation, likewise on a macroscopic level across planetary civilizations and beyond.
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Originally posted by Flying grenade:
page 455
example 11.14
what's the first reaction? substitution of Br from H in Alkane?
Typo error in the reactant. Mixing P4 and Br2 simply generates PBr3 in situ. -
Hi i need some help...
Which of the following will not reduce random errors in your experimental measurements?
a) double the weight of magnesium used to a calorimetry experiment
b) use a thermometer with a smaller scale
c) use activated and finer magnesium granules
d) use a larger calorimeter with the same volume of solution
i am thinking the answer is d since the rest will lead me to a more precise answer
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Originally posted by UltimaOnline:
Typo error in the reactant. Mixing P4 and Br2 simply generates PBr3 in situ.is the reactant CH3CH(OH)COOH?
what does the addn of water H2O do after generating PBr3 in situ ???