Calculate the H°_rxn for the Decomposition of Calcium Carbonate

question 60

Multiple Choice

Calculate the H°_rxn for the decomposition of calcium carbonate to calcium oxide and carbon dioxide. H°_f [CaCO₃(s) ] = -1206.9 kJ/mol; H°_f [CaO(s) ] = -635.1 kJ/mol; H°_f [CO₂(g) ] = -393.5 kJ/mol
CaCO₃(s)  CaO(s) + CO₂(g)

• A) -2235.5 kJ
• B) -1448.5 kJ
• C) -178.3 kJ
• D) 178.3 kJ
• E) 2235.5 kJ

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Definitions:

Intergroup Relations

The interactions and relationships that occur between groups of people, which can include aspects of conflict, cooperation, and competition.

Sherif

A psychologist known for his work on realist conflict theory and the Robbers Cave Experiment, studying intergroup conflict and cooperation.

Realistic Conflict Theory

Sherif’s theory of intergroup conflict that explains intergroup behaviour in terms of the nature of goal relations between groups.

Superordinate Goals

Goals that both groups desire but that can be achieved only by both groups cooperating.