Jawabanmu

2014-06-11T19:17:40+07:00
A. HCl ⇒ H+ + Cl-
H+ = Ma
H+ = 5 x 10^-2
pH = 2 - log 5

b. H2SO4⇒2H+ + SO4^-2
H+ = 2 x Ma = 2 ( 8 x 10^-3 ) = 16 x 10^-3 = 1,6 x 10^-2
pH = 2 - log 1,6

c. Ca(OH)2 ⇒ Ca2+ + 2OH-
OH- = 2 x Mb = 2 x 9 x 10^-3 = 18 x 10^-3 = 1,8 x 10^-2
pOH = 2 -log 1,8
pH = 12 + log 1,8
1 1 1