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### Topic: law of combining volumes  (Read 4929 times)

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#### integral0

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##### law of combining volumes
« on: December 08, 2004, 03:02:21 PM »
CO is oxidized to CO2 according to the equation, 2CO (g) + O2(g) --> 2CO2 (g).  If 2 L of CO(g) are mixed with 2 L of O2 (g), what is the resulting total volume of gas after the reaction has gone to completion, assuming no change in temperature or total pressure?

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How did they come up with this answer?  I don't think I understand the "Law of combining volumes" as produced by Gay Lussac and Avogadro.  Any help is appreciated!

#### Demotivator

• Guest
##### Re:law of combining volumes
« Reply #1 on: December 08, 2004, 03:14:27 PM »
The volume is directly proportional to moles assuming ideal gases.
The limiting reactant is CO. When it completely reacts, 1 vol O2 is left over. 2 vols of CO2 are produced. Total is 3 Volumes.

#### integral0

• Guest
##### Re:law of combining volumes
« Reply #2 on: December 08, 2004, 03:21:19 PM »
thanks man!  I own you one.  I'm staff here too, lol, just haven't been "here" in awhile.  Nice to meet you "Demotivator"

#### Donaldson Tan

• Editor, New Asia Republic
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##### Re:law of combining volumes
« Reply #3 on: December 08, 2004, 06:18:06 PM »
all these are assumed that P & T are kept constant, and the gases behave ideally.
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006