Can't compute pH using TI-83 Plus, please help

[jbjints]

Using the TI-83 Plus I enter: -log(1.0 X 10E-6), the answer I keep getting is 5 but I know the answr should be 6, any idea on what I am doing wrong? Every calculation seems to be one off the right answer.

[Jilaweez, BSN, MSN, RN]

I think you don't need to put in the 10 if you use the e button so it would look like this -log(1.0e-6) or -log(1.0x10-6). I hope that helps.

[jbjints]

I think you don't need to put in the 10 if you use the e button so it would look like this -log(1.0e-6) or -log(1.0x10-6). I hope that helps.

Thank You very much.

[akspudus]

yup....don't put the "10" in there. If you use the EE button...then 10 is implied. I wrote a nifty little pH program for my TI-83. I'm not sure if you can post attach files to this forum...otherwise I would post it here for all to use. The only problem...after spending the time to write the program...I have all of the calculations memorized. Another interesting way to study.

Akspudus

Miami Dade College