Answer
(a) pH = 1.5, Acidic solution.
(b) pH = 8.5, Basic solution.
(c) pH = 13.45, Basic solution.
(d) pH = 6.02, Acidic solution.
Work Step by Step
pH > 7 and pOH < 7: Basic solution.
pH = pOH = 7: Neutral solution.
pH < 7 and pOH > 7: Acidic solution.
1. Calculate the pH value
pH + pOH = 14
$pH$ + $ 12.5 = 14$
$pH$ = 14 - 12.5 = 1.5
2. Calculate the pH value
pH + pOH = 14
$pH$ + $ 5.5 = 14$
$pH$ = 14 - 5.5 = 8.5
3. Calculate the pH value
pH + pOH = 14
$pH$ + $ 0.55 = 14$
$pH$ = 14 - 0.55 = 13.45
4. Calculate the pH value
pH + pOH = 14
$pH$ + $ 7.98 = 14$
$pH$ = 14 - 7.98 = 6.02
