The ph of a strong base is 12.2 at 25 degrees. what is its hydroxide-ion concentration?

[OH⁻] = 0.016

Explanation:

Given data:

pH = 12.2

Hydroxide ion concentration = ?

Solution:

It is known that,

pH + pOH = 14

12.2 + pOH = 14

pOH = 14 - 12.2

pOH = 1.8

pOH = -log [OH⁻]

1.8 = -log [OH⁻]

10⁻¹°⁸ = [OH⁻]

[OH⁻] = 0.016

answer: c.

explanation:

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying