Question

the ph of 5×10^-3 moles/L Ba (OH)2 solution is

Answer 1

[OH-] = 10-²Molar
pOH = -log[OH-]
= 2
pH = 14-2
= 12

hope it helps you
@di

Answer 2

(-Oh)=10°-14/H+. H+=10`-14-10`6=8