Homework Help: Chemistry

Posted by Emily on Thursday, February 9, 2012 at 4:07pm.

Consider the following hypothetical aqueous reaction: A (aq)-->B(aq)}. A flask is charged with 0.065 (mole) of A in a total volume of 100.0 (mL}. The following data are collected:
Time (min) 0 10 20 30 40
Moles of A .065 .051 .042 .035 .031

Calculate the average rate of disappearance of (A) between t = 0 min and t = 10 min, in units of M/S.

I have to do this for each time interval.

Chemistry - DrBob222, Thursday, February 9, 2012 at 4:20pm
What's S? seconds?
moles A @ 0 min = 0.065
moles A @ 10 min = 0.051
delta A = 0.065-0.051 = 0.014 moles/10min = 0.0014 moles/min or (0.0014/0.100L)/min = 0.014M/min. Convert that to seconds if that is S.
Chemistry - Emily, Thursday, February 9, 2012 at 4:36pm
Thanks so much :)

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