Given the Following Reactions CaCO₃ (S)→ CaO (S)+ CO₂ (G)ΔH

question 74

Multiple Choice

Given the following reactions CaCO₃ (s) → CaO (s) + CO₂ (g) ΔH = 178.1 kJ
C (s,graphite) + O₂(g) → CO₂(g) ΔH = -393.5 kJ
The enthalpy of the reaction
CaCO₃ (s) → CaO (s) + C (s,graphite) + O₂ (g)
Is ________ kJ.

• A)215.4
• B)571.6
• C)-215.4
• D)-571.6
• E)7.01 × 10⁴

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