Standard enthalpies of formation at 298 K are: CaCO_3(s): –1 207 kJ mol⁻¹ CaO(s):…
CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics
Problem
Standard enthalpies of formation at 298 K are:
CaCO_3(s): –1 207 kJ mol⁻¹
CaO(s): –635 kJ mol⁻¹
CO_2(g): –394 kJ mol⁻¹
What is the standard enthalpy change, in kJ mol⁻¹, for the reaction
CaCO_3(s) → CaO(s) + CO_2(g)?
(a) −178
(b) +572
(c) +178
(d) +966