Answer:
12.7
Explanation:
KOH, is a strong base and will dissociate completely in water to K+ and OH-.
For every mole of KOH, there will be 1 mole of OH-, so the concentration of OH- will be the same as the concentration of KOH.
[OH-] = 0.05 M.
pOH = - log [OH-] = - log (0.05) = 1.3,
the relationship between pH and pOH is given by
pH + pOH = 14
pH = 14 - pOH
pH = 14 - 1.3 = 12.7
