The Solvent Diethyl Ether Can Be Mixed with Water but Only

question 77

Multiple Choice

The solvent diethyl ether can be mixed with water but only by shaking the two liquids together.After the shaking is stopped,the liquids separate into two layers,much like oil and vinegar.The free-base form of the alkaloid caffeine is readily soluble in diethyl ether but not in water.Suggest what might happen to the caffeine of a caffeinated beverage if the beverage was first made alkaline with sodium hydroxide and then shaken with some diethyl ether.

• A)The water layer would turn a pink color indicating an alkaline pH.
• B)The caffeine would transform into the free base and transfer into the diethyl ether.
• C)The caffeine would transform into the free acid and transfer into the diethyl ether.
• D)The diethyl ether and water would mix into one layer.

Recognize the importance of critical thinking in educational settings and identify practices that either support or hinder its development.

Describe the role of scientific reasoning in understanding causal relationships.

Acknowledge the benefits of modeling, verbalizing, and practicing strategies for cognitive skill development.

Differentiate between critical and non-critical thinking behaviors.

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Definitions:

Ambiguous Terms

Words or phrases that lack specificity and can be understood in more than one way, often leading to confusion or misinterpretation.

Semantics

The study of the meaning and changes in the meaning of words or symbols.

Verbal Communication

The process of sharing information between individuals through the use of speech.

Filtering Of Information

The process of selectively focusing on certain details or aspects of information while disregarding others.