What is the soil pH if the [OH-] concentration is 0.00000001 mol/L?Group of answer choices6598
Question
What is the soil pH if the [OH<sup>-</sup>] concentration is 0.00000001 mol/L?
Group of answer choices 6598
Solution
To find the soil pH from the [OH-] concentration, we first need to find the pOH, and then subtract that from 14 (since pH + pOH = 14 at 25°C).
Step 1: Calculate the pOH The pOH is calculated as the negative logarithm (base 10) of the hydroxide ion concentration [OH-].
Given [OH-] = 0.00000001 mol/L, we can calculate pOH as follows:
pOH = -log10([OH-]) pOH = -log10(0.00000001) pOH = 8
Step 2: Calculate the pH Now, we can calculate the pH by subtracting the pOH from 14.
pH = 14 - pOH pH = 14 - 8 pH = 6
So, the soil pH is 6.
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