195k views
4 votes
What is the difference in proton concentration between this solution and one that 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.

User Igelr
by
8.2k points

1 Answer

5 votes

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.

User JanT
by
8.7k points