Respuesta :
Answer:
-21.42 kJ
Explanation:
enthalpy of reaction: ∑enthalpy change of formation of the products - ∑ enthalpy change of formation of the reactants
- enthalpy change of formation of SiCl4(l): −687.0 kJ/mol
- enthalpy change of formation of H2O(l): -285.82 kJ/mol
- enthalpy change of formation of SiO2(s): -910.86 kJ/mol
- enthalpy change of formation of HCl(g): -92.3 kJ/mol
enthalpy of reaction: -910.86 + 4*(-92.3) - [−687.0 + 2*(-285.82)] = -21.42 kJ
