The Indicator Phenol Red Changes from Yellow to Red Between

question 75

Multiple Choice

The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If phenol red is added to a solution, and the solution turns yellow, then

• A)the solution is basic, and the pH must be at or below 7.0.
• B)the pH of the solution must be below 6.8, and the solution is basic.
• C)the pH of the solution must be below 6.8, and the solution is acidic.
• D)the pH of the solution must be above 8.4, and the solution is basic.
• E)the pH of the solution is above 8.4, and the solution is acidic.

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Definitions:

Availability Heuristic

A quick mental approach that depends on the first examples that are thought of when assessing a particular subject, idea, technique, or choice.

Critical Thinking

The ability to analyze facts, generate and organize ideas, defend opinions, make comparisons, draw inferences, evaluate arguments and solve problems.

Confirmation Bias

The tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses.

Framing Effect

The influence on decision making caused by the way information is presented, rather than the actual information itself.