Calcium Oxide, CaO, Also Known as Quick Lime, Will React

question 13

Multiple Choice

Calcium oxide, CaO, also known as quick lime, will react with carbon dioxide to form calcium carbonate, CaCO₃. Which species, if any, acts as a Lewis acid in the reaction?

• A) Ca²⁺
• B) O^2-
• C) CO₂
• D) CaCO₃
• E) None of the species acts as a Lewis acid in this reaction.

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Definitions:

Dependent Variable

In experimental research, the variable that is observed and measured to determine the effect of the independent variable, reflecting outcomes or changes.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people.

Internal Validity

The extent to which a study can demonstrate that a causal relationship exists between variables, free from external influences.

Construct Validity

The extent to which a test measures what it claims to be measuring, in the context of psychological testing and research.