Answer
The range of possible pH values for the solution is: $4 \leq pH \leq 6$.
Work Step by Step
Methyl orange = yellow when: $pH \geq 4$
Bromthymol blue = yellow when: $pH \leq 6$
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 16 - Acid-Base Equilibria - Exercises - Page 718: 16.39b
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