Question

Tentukan nilai pH dari 100 mL larutan HCl 0,0001 M

Answer 1

jangan terkecoh dgn volume.. karena yg d gunakan hny kosentrasi... krena hcl asam kuaat maka pH= - log [H+] pH = - log 0,0001 = 4
jadi pH nya 4

Answer 2

HCl ==> H+ + Cl-

[H+] = koefisien H+/koefisien HCl x konsentrasi HCl

[H+] = 1/1 x 0,0001 M = 0,0001 M

pH = -log [H+]
pH = -log 0,0001 = 4