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.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
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 - Page 421: 2
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