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Topic: Aspirin Equation  (Read 3586 times)

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Offline IDudeScience

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Aspirin Equation
« on: March 13, 2010, 06:35:47 PM »
Salicylic Acid + Acetic Anhydride --> Aspirin + acetic acid

Is the mole ratio 1:1 for everything here?

Offline IDudeScience

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Re: Aspirin Equation
« Reply #1 on: March 15, 2010, 12:36:46 AM »
Anyone know why no matter what you can't expect a 100% yield of aspirin from that equation?

Offline AWK

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Re: Aspirin Equation
« Reply #2 on: March 15, 2010, 06:04:00 AM »
This is an equilibrium reaction
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Offline IDudeScience

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Re: Aspirin Equation
« Reply #3 on: March 15, 2010, 09:15:02 PM »
How can you tell?

Offline AWK

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Re: Aspirin Equation
« Reply #4 on: March 16, 2010, 02:19:20 AM »
For 100 % yield you should use an excess of acetic anhydride. Moreover some other reactions are possible
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Offline Mitch

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Re: Aspirin Equation
« Reply #5 on: March 16, 2010, 06:20:26 AM »
How can you tell?

Most reaction are in equilibrium. Unless you perturb the system by removing something, but then it really wouldn't be equilibrium. ;)
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