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December 30, 2025, 08:09:45 pm
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Author Topic: VCE Chemistry Revision Questions  (Read 31814 times)  Share 

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polky

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Re: VCE Chemistry Revision Questions
« Reply #15 on: November 12, 2008, 10:22:24 pm »
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Quote from: MaJezTiK on November 12, 2008, 10:10:55 pm
63. They must also be inert?

Lol dont mind me im so owned for chem after my A for midyear ive given up lol but only tying since its my last exam now

Not necessarily, in some reactions the electrode takes part in the reaction (Eg. copper electrode!)
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BiG DaN

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Re: VCE Chemistry Revision Questions
« Reply #16 on: February 21, 2009, 01:59:31 pm »
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sticky this
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Mao

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Re: VCE Chemistry Revision Questions
« Reply #17 on: May 23, 2009, 01:26:05 pm »
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Bump for revision.
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emkate

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Re: VCE Chemistry Revision Questions
« Reply #18 on: November 11, 2009, 10:28:11 am »
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can someone please tell me what KOHES(B) stands for?
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moekamo

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Re: VCE Chemistry Revision Questions
« Reply #19 on: November 11, 2009, 08:31:13 pm »
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Its the order of balancing half equations

key element

oxygen

hydrogen

electrons

states

B? not sure
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dekoyl

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Re: VCE Chemistry Revision Questions
« Reply #20 on: November 11, 2009, 08:32:43 pm »
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^Yes, but I'm not sure what B is.
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Blakhitman

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Re: VCE Chemistry Revision Questions
« Reply #21 on: March 14, 2010, 09:59:53 pm »
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This is awesome
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Blakhitman

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Re: VCE Chemistry Revision Questions
« Reply #22 on: April 11, 2010, 04:23:47 pm »
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Quote from: Mao on June 09, 2008, 05:48:07 pm
What is the purpose of tetramethylsilane in NMR spectroscopy?
TMS marks the 0, X marks the spot :D

If asked this question, would that answer be sufficient? or do we have to explain why TMS is used as reference point??
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akira88

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Re: VCE Chemistry Revision Questions
« Reply #23 on: April 11, 2010, 06:25:54 pm »
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Quote from: Blakhitman on April 11, 2010, 04:23:47 pm
Quote from: Mao on June 09, 2008, 05:48:07 pm
What is the purpose of tetramethylsilane in NMR spectroscopy?
TMS marks the 0, X marks the spot :D

If asked this question, would that answer be sufficient? or do we have to explain why TMS is used as reference point??
You could probably add that it is chemically inert so it doesn't affect the sample and that it produces a peak that is "formed well away from the peaks that most chemists are interested in". Lol courtesy of the textbook :P
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Blakhitman

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Re: VCE Chemistry Revision Questions
« Reply #24 on: April 11, 2010, 06:43:42 pm »
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Quote from: akira88 on April 11, 2010, 06:25:54 pm
Quote from: Blakhitman on April 11, 2010, 04:23:47 pm
Quote from: Mao on June 09, 2008, 05:48:07 pm
What is the purpose of tetramethylsilane in NMR spectroscopy?
TMS marks the 0, X marks the spot :D

If asked this question, would that answer be sufficient? or do we have to explain why TMS is used as reference point??
You could probably add that it is chemically inert so it doesn't affect the sample and that it produces a peak that is "formed well away from the peaks that most chemists are interested in". Lol courtesy of the textbook :P

Yep also that it has heaps of Hydrogens...all equivalent, so it produces a large singlet, this is the case with the carbons aswell. :D
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