Final answer:
The concentration of hydroxide ions in a solution with a pOH of 3.58 at 25.0 °C is 2.63 × 10^-4 M, calculated by taking the antilog of the negative pOH value.
Step-by-step explanation:
The concentration of hydroxide ions in a solution with a pOH of 3.58 at 25.0 °C can be calculated using the definition of pOH, which is the negative logarithm of the hydroxide ion concentration. The formula to convert pOH to hydroxide ion concentration is as follows:
[OH-] = 10-pOH
Therefore, substituting the given pOH value into the formula:
[OH-] = 10-3.58
Calculating this gives us:
[OH-] = 2.63 × 10-4 M
The concentration of hydroxide ions in the solution is therefore 2.63 × 10-4 M.