Answer
“rich fen.”
Work Step by Step
With $[H^+]=2.49\times10^{-7}$, we have $pH=-log[H^+]=-log(2.49\times10^{-7})=7-log2.49\approx6.6$.
Based on the definition, this value indicates a “rich fen.”
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.4 Evaluation Logarithms and the Change-of-Base Theorem - 4.4 Exercises - Page 457: 41
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