February 25, 2017

Homework Help: chemistry -repost

Posted by Nancy on Wednesday, August 6, 2014 at 3:27pm.

Still can't figure this one out-- sorry for reposting, this is the last post, if someone has time to review this question and see if they can figure out how the textbook got 1.0x10^-7 seconds

Iodine combines to form I2 in liquid propane solvent with a constant of 1,5 x 10^10 L/mol. The rate is 2nd order. Since the reaction occurs quickly, a flash of light creates an I concentration of .0100M. How long will it take for 95% of the atoms to form I2?

This must use a second order rate equation, but I cannot get 1.0x10^-7 s which is the answer.

I assume 1.0x10^-7 s = seconds.

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