Multiple Choice
The indicator propyl red has Ka = 3.3 * 10¯6. What would be the approximate pH range over which it would change color?
A) 3.5 to 5.5
B) 4.5 to 6.5
C) 5.5 to 7.5
D) 6.5 to 8.5
E) None of these choices is correct.
Correct Answer:

Verified
Correct Answer:
Verified
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