Question

current objective
classify solutions as an acidic, basic, or neutral based on ph or

question
the poh of a solution is equal to:

select the correct answer below:

• log h3o+

log h3o+

• log oh-

log oh-

Explanation:

Step1: Recall the definition of pOH

The pOH of a solution is defined as the negative logarithm (base 10) of the hydroxide ion concentration.

Step2: Write the formula for pOH

Mathematically, it is expressed as $pOH = -\log[\text{OH}^-]$.

Step3: Analyze other options

• Option A: $-\log[\text{H}_3\text{O}^+]$ is the formula for pH, not pOH.
• Option B: $\log[\text{H}_3\text{O}^+]$ is not a standard formula for any common solution property.
• Option D: $\log[\text{OH}^-]$ does not match the definition of pOH.

So, the correct answer is $-\log[\text{OH}^-]$.

Answer:

C. $-\log[\text{OH}^-]$