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THERMODYNAMICS
Question #72070
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Why is the reaction CaO(s) + CO₂(g) → CaCO₃(s) not a standard enthalpy of formation reaction?
A. The product is not in its standard state
B. The reaction is exothermic
C. Calcium carbonate is formed from compounds, not elements
D. The coefficient of CaCO₃ is greater than 1
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