Tuesday

October 21, 2014

October 21, 2014

Posted by **Amy** on Saturday, February 2, 2013 at 10:13am.

My work:

ln(0.0160/0.032) = (32,900/8.314)(1/T2 - 1/298.15)

-0.6931 = 3,957.180(1/T2 - 0.00335)

-0.6932 = 3,957.180(1/T2) - 13.2565

13.187T2 = 3,957.180

T2 = 300.08 K = 26.98 degrees C

The answer above is not correct, and I would like to know where I went wrong. Previously, I divided 32.9 x 10-3 by 8.314. I corrected that, but I still get 3,957.180. In addition, I need this answer for a follow-up question.

- Corrected Temperature Problem -
**DrBob222**, Saturday, February 2, 2013 at 3:37pmMy work:

ln(0.0160/0.032) = (32,900/8.314)(1/T2 - 1/298.15)

-0.6931 = 3,957.180(1/T2 - 0.00335)**Since we are using at least four places here, I used -0.69315 for ln0.5 on the left and I used -0.003354 for 3957.180*(1/298.15) but neither of those change the answer significantly. The next line contains a larger error.**

-0.6932 = 3,957.180(1/T2) - 13.2565

13.187T2 = 3,957.180

T2 = 300.08 K = 26.98 degrees C

**-0.6932 = (3957.18/T2) - 13.2565**

13.2565-0.6392 = 3957.18/T2

12.617 T2 = 3957.18

T2 = 313.6

If you use the -0.69315 for ln0.5 and you use the 0.003354 from my work above, T2 is about a degree higher or 314.58 K = about 41 C. After I post this response I'll look to see that it's ok; if not I'll post a P.S.

**Answer this Question**

**Related Questions**

Arrhenius Question - The activation energy of a certain reaction is 32.9 kJ/mol ...

Arrhenius Reaction - The activation energy of a certain reaction is 32.9 kJ/mol ...

Temperature and Rate - Q: The activation energy of a certain reaction is 32.9 ...

Rate Constant - My Work is Incorrect - Hi! I am stuck with this question and I ...

chemistry - The rate constant of the reaction between CO2 and OH - in aqueous ...

chem - The activation energy of a certain reaction is 65.7 kJ/mol. How many ...

Chemistry - The activation energy of a certain reaction is 34.9kJ/mol . At 23...

How to Set Up Equation - Given that the initial rate constant is at an initial ...

chemistry - 1) The activation energy of a certain reaction is 35.3 kJ/mol. At ...

chemistry - I have two questions that I really don't understand. The first one ...