Posted by **Jules** on Monday, March 12, 2012 at 7:18pm.

Hi,

I am trying to figure out how to calculate the average temperature of 2 different chemical solutions based upon the temperatures I measured. The question states: Find the average Ti of HCl & NaOH solutions.

The Ti of NaOH solution is: 20.87 C

The Ti of HCl solution is: 21.16 C

Do I just add the 2 temperatures and divide by 2, like so: 20.87 + 21.16=43.03, 43.03/2 = 21.15 ?

- Chemistry -
**DrBob222**, Monday, March 12, 2012 at 8:34pm
Yes, that's how you do in concept b ut not with those numbers. When I add them i get 42.03 and that divided by 2 is not 21.15.

- Chemistry -
**Jules**, Monday, March 12, 2012 at 8:42pm
Thank you very much, Dr.Bob! You are correct, I accidentally added the values incorrectly. We conducted the lab in class, which is where I measured the temperature for both solutions and obtained the Ti shown above. I just wanted to make sure that there wasn't some kind of formula for calculating the average of Ti. The solution seemed too easy!

Thanks!

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