Final answer:
The solution with a pH of 8.5 has a proton concentration approximately 32 times less than that of a solution with a pH of 7, equating to a [H⁺] of 1.0 × 10^-8.5 M, making the correct answer option C.
Step-by-step explanation:
If you were given a solution that has the pH of 8.5, its concentration of protons ([H⁺]) would be 1.0 × 10^⁻8.5 M. To understand the difference in the proton concentration between this solution and one that has a pH of 7, you can calculate as follows:
Since a pH of 7 corresponds to a [H⁺] of 1.0 × 10⁻⁷ M, and the pH scale is logarithmic, a one-unit change in pH means a tenfold change in hydrogen ion concentration. This solution with a pH of 8.5 is 1.5 pH units higher than pH 7, making it less acidic.
Therefore, to find how much less concentrated the H⁺ ions are
pH 8.5 - pH 7 = 31.62 times less concentrated ≈ 32 Times.
So the correct answer to the question would be that this solution is about 32 times less concentrated than a solution with pH 7.0, which corresponds to option C.
If you were given a solution that has the pH of 8.5, what would be its concentration of protons? What is the difference in the proton concentration between the solution and one the has a pH of 7?
A) This solution is about 320 times less concentrated than a solution with pH 7.0.
B) This solution is about 320 times more concentrated than a solution with pH 7.0.
C) This solution is about 32 times less concentrated than a solution with pH 7.0.
D) This solution is about 32 times more concentrated than a solution with pH 7.0.