Question

Nilai ph campuran 50 ml ch3cooh 0.1 m dan 50 ml ch3coona 0.1m adalah ? ka ch3cooh 1,8 x 10^-5 !! jawab yaa

Answer 1

CH3COOH+NAOH--->CH3COONa + H2O
       5                            0.1
H^+=Ka asam /garam
     =18.10^-6 . 5/0.1
     =18.10^-6 .  50
     =90.10^-5
     =9.10^-4
PH= - log(H+)=4 - log 9