Question

What is the hydroxide ion concentration of a solution with a pH of 2.262

1. 5.47 x 10 ^-4
2. 1.83 x 10 ^-12
3. 1.83 x 10 ^-13
4. 5.47 x 10 ^-3
5. 1.83 x 10 ^-11
6. 5.47 x 10 ^-2

Answer 1

pH = -log[H⁺]

2.262 = -log[H⁺]

[H⁺] $= 10^{-2.262}=5.47 \times 10^{-3}$

Answer: 4. 5.47 x 10 ^-3