Bored of Studies - Chemistry http://community.boredofstudies.org en Sat, 21 Nov 2009 10:51:52 GMT vBulletin 60 http://community.boredofstudies.org/images/misc/rss.jpg Bored of Studies - Chemistry http://community.boredofstudies.org Preparing for year 12 chem http://community.boredofstudies.org/showthread.php?t=228752&goto=newpost Mon, 16 Nov 2009 08:39:40 GMT I know it's a bit early.

But I just finished year 11 exams and would like some tips to help me get prepared for unit 3 and 4 chem over the holidays.

So how did you prepare? And if you didn't how would you if you had the chance again?

Thank you ]]> Chemistry Blakhitman http://community.boredofstudies.org/showthread.php?t=228752 Galvanic Cells anode/cathode http://community.boredofstudies.org/showthread.php?t=228307&goto=newpost Thu, 12 Nov 2009 11:04:48 GMT Ok

is the metal that is a stronger reductant (undergoes oxidation) the anode??

example.

using the electrochemical series below.

Zn would be the anode in a Zn/Ag cell because the higher the half cell in this series the stronger the oxidant and Zn is lower so it's stronger reductant? am I right?

thanks
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]]> Chemistry Blakhitman http://community.boredofstudies.org/showthread.php?t=228307 Stav 09 Unit 2 http://community.boredofstudies.org/showthread.php?t=228271&goto=newpost Thu, 12 Nov 2009 08:12:10 GMT Does anyone have a copy they could upload, or if their concerned of copyright issues..then email? PLEASE Thank you Does anyone have a copy they could upload,
or if their concerned of copyright issues..then email?

PLEASE
Thank you ]]> Chemistry navman121 http://community.boredofstudies.org/showthread.php?t=228271 well, it is done http://community.boredofstudies.org/showthread.php?t=228212&goto=newpost Thu, 12 Nov 2009 00:25:41 GMT so let me be the first to ask, how did everyone go? so let me be the first to ask, how did everyone go? ]]> Chemistry Inneed http://community.boredofstudies.org/showthread.php?t=228212 question about catalysts http://community.boredofstudies.org/showthread.php?t=228058&goto=newpost Tue, 10 Nov 2009 11:16:38 GMT I know that catalysts speed up a reaction, but never affect the Equilibrium constant or the yiled of a product. And i know if helps to lower the activation energy of a reaction allowing more particles to oversome it and react. But does a catalyst alter the energy released from a reaction, the... I know that catalysts speed up a reaction, but never affect the Equilibrium constant or the yiled of a product. And i know if helps to lower the activation energy of a reaction allowing more particles to oversome it and react.

But does a catalyst alter the energy released from a reaction, the (delta) DH of a reaction? ]]> Chemistry Inneed http://community.boredofstudies.org/showthread.php?t=228058 has there ever been a question, asking http://community.boredofstudies.org/showthread.php?t=227854&goto=newpost Mon, 09 Nov 2009 06:22:04 GMT you to calculate the Ph of a weak base, given its pkB value? Like, a PKb for ammonia is something like 7.8 x 10^-8 NH3 + h20 = nh4+ + oh-? you to calculate the Ph of a weak base, given its pkB value?

Like, a PKb for ammonia is something like 7.8 x 10^-8

NH3 + h20 = nh4+ + oh-? ]]> Chemistry Inneed http://community.boredofstudies.org/showthread.php?t=227854