College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Section 4.7 - Logarithmic Scales - 4.7 Exercises: 2

Answer

Basic

Work Step by Step

$\mathrm{p}\mathrm{H}_{substance}=-\log[\mathrm{H}^{+}]=-\log(3.1\times 10^{-8})\approx 7.5$ Since the pH$\gt7$, the substance must be basic.
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