First slide

PH of strong acids and strong bases

Question

50 ml of H₂O is added to 50 ml of 1 × 10^-3 M barium hydroxide solution. What is the pH of the resulting solution?

Moderate

A

3.0
B

3.3
C

11.7
D

11.0

Solution

$[{OH}^{-}] = \frac{50 \times 10^{- 3} \times 2}{100} = 10^{- 3}$
P^OH = 3
P^H = 11.

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