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Offline mrdeadman

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Re: AP test
« Reply #75 on: May 09, 2006, 11:51:16 PM »
ok, what's the net-ionic equation? cr3+ + Sn -> Cr + Sn2+
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Offline syko sykes

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Re: AP test
« Reply #76 on: May 09, 2006, 11:51:57 PM »
for part d, would the metal be Se? or maybe Te?

G is gibbs free energy... doesn't a positive delta G mean the reaction is spontaneous?
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Offline mrdeadman

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Re: AP test
« Reply #77 on: May 09, 2006, 11:52:34 PM »
what exactly is delta G and delta S
delta g is gibbs free energy-tells spontaneity of reaction, delta s is entropy-tells how orderly the products are in relation to the reactants.
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Offline rctrackstar2007

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Re: AP test
« Reply #78 on: May 09, 2006, 11:53:14 PM »
didn't tesdahl say that the e- flow opposite of current which means they go from anode to cathode right?

exactly!!
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The world is like an atom. The not-quite-as-intelligent people are the nucleus all packed together sharing a common...everything. We, we are the electrons. Granted we're not as smart as these engineers and what-not so we're most likely in the first orbital, but we're the electrons of this giant atom. We all have differing intelligences and ideas and we are separated from the nucleus which makes us better because no one really cares about how a nucleus acts. It's the electrons that make chemistry, except for nuclear chem, of course, which I am a big fan of.

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Offline mrdeadman

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Re: AP test
« Reply #79 on: May 09, 2006, 11:53:19 PM »
for part d, would the metal be Se? or maybe Te?

G is gibbs free energy... doesn't a positive delta G mean the reaction is spontaneous?
Cr3+
and a positive delta g is nonspontaneous.
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Offline tennis freak

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Re: AP test
« Reply #80 on: May 09, 2006, 11:53:34 PM »
i thought that if delta g was negative that meant it was spontaneous
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Offline syko sykes

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Re: AP test
« Reply #81 on: May 09, 2006, 11:54:05 PM »
didn't tesdahl say that the e- flow opposite of current which means they go from anode to cathode right?
electrons flow from negative to positive bcuase of attraction... conventional current is opposite of that
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Offline mrdeadman

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Re: AP test
« Reply #82 on: May 09, 2006, 11:54:42 PM »
i thought that if delta g was negative that meant it was spontaneous
i beat you to it aHA! :o
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Offline tennis freak

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Re: AP test
« Reply #83 on: May 09, 2006, 11:55:13 PM »
what is the difference between diprotic and monoprotic?
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Offline rctrackstar2007

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Re: AP test
« Reply #84 on: May 09, 2006, 11:55:18 PM »
what exactly is delta G and delta S

neg delta S means the reaction becomes more entropoetic (??wordage??) as it proceeds

neg delta G means spontaneous
AP Chemistry Squad Member [002]

The world is like an atom. The not-quite-as-intelligent people are the nucleus all packed together sharing a common...everything. We, we are the electrons. Granted we're not as smart as these engineers and what-not so we're most likely in the first orbital, but we're the electrons of this giant atom. We all have differing intelligences and ideas and we are separated from the nucleus which makes us better because no one really cares about how a nucleus acts. It's the electrons that make chemistry, except for nuclear chem, of course, which I am a big fan of.

-Your's truly, 2006;
  written to describe the HS chem student apart from the average being

Offline mrdeadman

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Re: AP test
« Reply #85 on: May 09, 2006, 11:55:36 PM »
didn't tesdahl say that the e- flow opposite of current which means they go from anode to cathode right?
electrons flow from negative to positive bcuase of attraction... conventional current is opposite of that
yeah but which is which, anode positive or negative? im thinking negative but not sure.
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Offline syko sykes

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Re: AP test
« Reply #86 on: May 09, 2006, 11:55:49 PM »
how do you know the metal is Cr3+?
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Offline tennis freak

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Re: AP test
« Reply #87 on: May 09, 2006, 11:56:51 PM »
anode is the negative
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Offline rctrackstar2007

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Re: AP test
« Reply #88 on: May 09, 2006, 11:57:00 PM »
what is the difference between diprotic and monoprotic?

diprotic means 2 H+ ions and mono means 1 H+ ions...

someone check me on that
AP Chemistry Squad Member [002]

The world is like an atom. The not-quite-as-intelligent people are the nucleus all packed together sharing a common...everything. We, we are the electrons. Granted we're not as smart as these engineers and what-not so we're most likely in the first orbital, but we're the electrons of this giant atom. We all have differing intelligences and ideas and we are separated from the nucleus which makes us better because no one really cares about how a nucleus acts. It's the electrons that make chemistry, except for nuclear chem, of course, which I am a big fan of.

-Your's truly, 2006;
  written to describe the HS chem student apart from the average being

Offline syko sykes

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Re: AP test
« Reply #89 on: May 09, 2006, 11:57:08 PM »
didn't tesdahl say that the e- flow opposite of current which means they go from anode to cathode right?
electrons flow from negative to positive bcuase of attraction... conventional current is opposite of that
yeah but which is which, anode positive or negative? im thinking negative but not sure.
cathode is positive and anode is negative
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