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Topic: Chemistry problem  (Read 2625 times)

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Offline wraene

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Chemistry problem
« on: February 09, 2011, 03:39:02 PM »
Consider the reaction 4PH3 (g) → P4 (g) + H2 (g)
If in a certain experiment, over a specific amount of time, 0.048 mol PH3 is consumed in a 2.0 L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?

I haven't taken chemistry for a long time. I don't understand a bunch of this. Can someone please help?

Offline DevaDevil

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Re: Chemistry problem
« Reply #1 on: February 09, 2011, 04:56:55 PM »
well, first of all, start by balancing the reaction equation.

Offline wraene

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Re: Chemistry problem
« Reply #2 on: February 09, 2011, 07:25:34 PM »
The balanced equation is
4PH3 (g) -> P4(g) + 6H2 (g)

Offline rabolisk

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Re: Chemistry problem
« Reply #3 on: February 09, 2011, 07:39:39 PM »
This tells us that 4 molecules of PH3 are converted to 1 molecule of P4 and 6 molecules of H2. Put another way, every time 4 molecules of PH3 are used up, 1 molecule of P4 and 6 molecules of H2 are formed. See if this helps you.

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