Multiple Choice
Which of the following functional groups contains nitrogen?
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3. Chemical Reactions
Functional Groups in Chemistry
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Which of the following best describes the function of an emulsifier in chemistry?
A
It stabilizes mixtures of immiscible liquids by reducing surface tension between them.
B
It acts as a reducing agent in redox reactions.
C
It increases the rate of a chemical reaction by lowering the activation energy.
D
It neutralizes acids to form salts and water.
Verified step by step guidance1
Understand the term 'emulsifier' in chemistry: An emulsifier is a substance that helps mix two liquids that normally do not mix well, such as oil and water.
Recognize that immiscible liquids are liquids that do not form a homogeneous mixture when combined, often separating into layers due to differences in polarity or density.
Know that emulsifiers work by reducing the surface tension between these immiscible liquids, allowing them to form a stable mixture called an emulsion.
Differentiate the function of an emulsifier from other chemical roles: it does not act as a reducing agent, catalyst, or acid neutralizer.
Conclude that the best description of an emulsifier's function is that it stabilizes mixtures of immiscible liquids by reducing surface tension between them.
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