In the Hydrogenation of Double Bonds,a Catalyst Is Needed

question 30

Multiple Choice

In the hydrogenation of double bonds,a catalyst is needed.In the second step,the reactants diffuse on the surface until they approach each other.This step is known as

• A) adsorption.
• B) diffusion.
• C) reaction.
• D) desorption.
• E) none of the above

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Definitions:

Superordinate Goals

Shared goals that override differences among people and require their cooperation.

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Widely held but simplified and generalized beliefs about a particular group of people or type of person.

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The tendency to favor our own group.

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An unjustifiable (and usually negative) attitude toward a group and its members. Prejudice generally involves stereotyped beliefs, negative feelings, and a predisposition to discriminatory action.