Calculating HCl volume to adjust Tris buffer to pH 8.0

[drunkenfool]

Would appreciate some assistance from some chem gurus

Trying to make the calculations necessary to prepare 0.1 M Tris-HCl buffer. I have 80mL of a 0.1 M tris solution and need to find the volume of 1 N HCl required to adjust the pH of Tris to 8.0. I believe I need to use the Henderson-Hasselbach equation but not sure how to set it up.

Thank you!

 

[Borek]

Check this out:

http://www.chembuddy.com?left=pH-calculation&right=pH-buffers-henderson-hasselbalch

and this

http://www.chembuddy.com?left=pH-calculation-questions&right=pH-buffer-q2