Consider the Decomposition of Calcium Carbonate Shown Below

question 13

Multiple Choice

Consider the decomposition of calcium carbonate shown below.Which of the following statements correctly describes this reaction as it occurs in a test tube? CaCO₃(s) + 42.5 kcal → CaO(s) + CO₂(g)

• A)The test tube would feel warm,since the reaction would absorb heat from the surroundings.
• B)The test tube would feel cold,since the reaction would absorb heat from the surroundings.
• C)The test tube would feel cold,since the reaction would release heat to the surroundings.
• D)The test tube would feel warm,since the reaction would release heat to the surroundings.
• E)It is impossible to predict without actually performing the experiment.

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