My question talks about a buffer with HA and NaA, where NaA is the sodium salt of the acid.
What does the equation for this look like?
HA + NaA --> H+ + NaA2
??
No, there are two equations.
The first is the ionization of HA;'
HA ==> H^+ + A^-
The second is the NaA.
NaA ==> Na^+ + A^-
In a buffer equation one usually finds use of the Henderson-Hasselbalch equation.