Topic: Aspirin Equation (Read 4395 times)

IDudeScience · « **on:** March 13, 2010, 06:35:47 PM »

Salicylic Acid + Acetic Anhydride --> Aspirin + acetic acid

Is the mole ratio 1:1 for everything here?

IDudeScience · « **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?

AWK · « **Reply #2 on:** March 15, 2010, 06:04:00 AM »

This is an equilibrium reaction

IDudeScience · « **Reply #3 on:** March 15, 2010, 09:15:02 PM »

How can you tell?

AWK · « **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

Mitch · « **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.