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October 22, 2025, 12:05:05 am
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Author Topic: kingpomba's last minute chem bonanza  (Read 2406 times)  Share 

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slothpomba

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kingpomba's last minute chem bonanza
« on: November 10, 2010, 09:35:49 pm »
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Hey guys just some questions from exams i've been rushing today, thanks for all the help in advance.

I selected C... i dont see
Edit:Stupid question... moving along

Why is the answer C... is it because of dilution?

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fady_22

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Re: kingpomba's last minute chem bonanza
« Reply #1 on: November 10, 2010, 09:39:22 pm »
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H+ reacts with OH-, removing it from the equilibrium system. Although there is a net forward reaction to oppose it, it is only partial and hence overall the concentration of OH- would decrease.
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slothpomba

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Re: kingpomba's last minute chem bonanza
« Reply #2 on: November 10, 2010, 09:41:44 pm »
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Ah thanks, i see now.

Anyone care to provide an example of any kind using the Ka values... the part of this unit i hate the most -_-
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Martoman

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Re: kingpomba's last minute chem bonanza
« Reply #3 on: November 10, 2010, 09:52:29 pm »
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heres a question for ya

What acid in the data book would give you the highest pH?
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Stroodle

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Re: kingpomba's last minute chem bonanza
« Reply #4 on: November 10, 2010, 09:54:20 pm »
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Quote from: Martoman on November 10, 2010, 09:52:29 pm
heres a question for ya

What acid in the data book would give you the highest pH?

Thymol blue? :)
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Martoman

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Re: kingpomba's last minute chem bonanza
« Reply #5 on: November 10, 2010, 09:55:59 pm »
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See thats the point of this question, and it is very probable for tommorrow in terms of VCAA tricks. I asked for the HIGHEST pH.
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jasoN-

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Re: kingpomba's last minute chem bonanza
« Reply #6 on: November 10, 2010, 09:57:29 pm »
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is it hydrocyanic acid?
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Stroodle

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Re: kingpomba's last minute chem bonanza
« Reply #7 on: November 10, 2010, 09:57:37 pm »
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Lol, i know. My humour is not the greatest..

It's Arachidonic acid.












or Phenolphthalein.
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mostafa1002

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Re: kingpomba's last minute chem bonanza
« Reply #8 on: November 10, 2010, 09:58:17 pm »
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you sly dog you ;)
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Linkage1992

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Re: kingpomba's last minute chem bonanza
« Reply #9 on: November 10, 2010, 09:58:21 pm »
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is it ammonium ion acid?
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mostafa1002

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Re: kingpomba's last minute chem bonanza
« Reply #10 on: November 10, 2010, 09:59:37 pm »
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i cbf getting my data book, its whatever acid has the LOWEST Ka value.
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toshibaj

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Re: kingpomba's last minute chem bonanza
« Reply #11 on: November 10, 2010, 09:59:53 pm »
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Hey sorry to hijack, but could someone explain to me VCAA 2008 Question 8b? It's the question about the flow of the electrolyte in a fuel cell.
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Martoman

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Re: kingpomba's last minute chem bonanza
« Reply #12 on: November 10, 2010, 10:00:02 pm »
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Quote from: Stroodle on November 10, 2010, 09:57:37 pm
Lol, i know. My humour is not the greatest..

It's Arachidonic acid.












or Phenolphthalein.

we have a winner
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Re: kingpomba's last minute chem bonanza
« Reply #13 on: November 10, 2010, 10:00:11 pm »
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Quote from: Stroodle on November 10, 2010, 09:57:37 pm
Lol, i know. My humour is not the greatest..

It's Arachidonic acid.
well played.
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Martoman

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Re: kingpomba's last minute chem bonanza
« Reply #14 on: November 10, 2010, 10:00:55 pm »
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Quote from: toshibaj on November 10, 2010, 09:59:53 pm
Hey sorry to hijack, but could someone explain to me VCAA 2008 Question 8b? It's the question about the flow of the electrolyte in a fuel cell.

anions move to anode
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2009: Math methods: 50, Psychology: 44
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