[Caroline]

Hello! I have to design a buffer solution and follows these guidelines:
-pH 6.5 (maintain ±0.10 units on addition of 1 mL of 1 M HNO3 and 1 mL of 1 M NaOH to separate 100mL batches of your buffer).
-Volume: 100mL
-Give the pKa of the equilibrium

I would really appreciate any help with this. I am having great difficulty with acids and bases and if I could get explanations it would be amazing. I was told to use the Henderson-Hasselbalch equation but I do not even know how to start with this! 

[Borek]

You have to show your attempts at solving the question to receive help. This is a forum policy.

http://www.chembuddy.com/?left=buffers&right=buffers

http://www.chembuddy.com/?left=buffers&right=composition-calculation

http://www.chembuddy.com/?left=buffers&right=pH-change