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Topic: Measuring the rate of reaction.  (Read 4126 times)

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Offline zakid

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Measuring the rate of reaction.
« on: March 08, 2009, 09:31:20 AM »
Can someone provide me with some ideas on measuring the rate of reaction? I need specific examples (reaction+what to measure).

I managed to come up with this:
Na2S2O3 + HCl --> S+ SO2 + NaCl, I would measure the amount of precipitation.

Offline Arkcon

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Re: Measuring the rate of reaction.
« Reply #1 on: March 08, 2009, 09:39:08 AM »
Well, I'm going to give you standard mini-hint #2 -- the reaction has to be possible.  I don't think yours is.  Standard mini hint #1 is a balanced equation, and you don't really have that, but there's no point in balancing a equation that won't happen.  If you have to decide a lab practical all on your own, based on precipitation, you should be able to come up with another one.

Gah.  I misread your formula.  You should balance it first, anyway.
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline Borek

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Re: Measuring the rate of reaction.
« Reply #2 on: March 08, 2009, 10:08:32 AM »
No hydrogen on the RHS ;)
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Offline zakid

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Re: Measuring the rate of reaction.
« Reply #3 on: March 08, 2009, 10:39:25 AM »
Forgot to add H2O
This should be balanced correctly:
Na2S2O3 + 2HCl --> SO2(g) + S(s) + H2O(l) + 2NaCl(aq)

Anyway, can you come up with some other examples?

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