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Rate Processes in Chemical Reactions: Chapter Question 1

Rate Processes in Chemical Reactions: Chapter Question 1

Postby hyunbb0gam » Wed Jul 18, 2012 9:00 am

Is 0.100M HCl used to hydrolyse sucrose, and so the rate law for this reaction might be:

rate= (3.66 x 10-3 min-1)[sucrose][0.1]^n ?
But, as we don't know what n is we just say that it might be:

rate= (3.66 x 10-3 min-1)[sucrose] ?
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Postby goldstanda3269 » Tue Jul 31, 2012 11:47 pm

Good question but we do know what "n" must be.

The rate law is determined by data presented in a table but the data for HCl is not there but we are aware of only 1 concentration for HCl. Presumably, the concentration of HCl does not affect the initial rate. Thus n = 0 meaning it is a zeroth order reaction with respect to HCl, first order with respect to sucrose (based on the data).
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