Consider the thermal decomposition of CaCO3: CaCO3(s) CaO(s) + CO?(g) The equilibrium vapor pressures of CO? are 22.5 mmHg at 700. °C and 1,738 mmHg at 950 °C. Calculate the standard enthalpy of the reaction. Round your answer to 3 significant digits. Note: Reference the Fundamental constants table for additional information. kJ mol X 5

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Consider the thermal decomposition of

CaCO_{3}

:

CaCO_{3} (s) ? CaO (s) + CO_{2} (g)

The equilibrium vapor pressures of

CO_{2}

are

22.5 mmHg

at

700.^{?} C

and

1, 738 mmHg

at

950.^{?} C

. Calculate the standard enthalpy of the reaction. Round your answer to 3 significant digits. Note: Reference the Fundamental constants table for additional information.

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