How woud you prapare a 250 ml of buffer with pH 4,5 from 0,2000 M NaCHCOO3
and 0,300 M CH3COH? (Ka=1,77*10^-4)
I get from the Henderson Hasselbac eqution that the ratio between acetic ion and acetic acid is: 5,6[CH3COOH]=[CH3COO-]
But I dont know how to continue.