Question about Thermochemistry: Enthalpy
Subject Chemistry
Chemistry
Source Originais Teachy
Originais Teachy
Topic Thermochemistry: Enthalpy
Thermochemistry: Enthalpy
Difficulty Very Easy
Very Easy
(Originais Teachy 2023) - Question Very Easy of Chemistry
Consider the complete combustion reaction of methane, CH4, at constant pressure, which releases heat and is represented by the equation: CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l) with ΔH = -802 kJ/mol. Based on the standard enthalpy of formation of CO2 and H2O, which are respectively -393.5 kJ/mol and -285.8 kJ/mol, calculate the enthalpy change of the reaction considering that all products are in the standard state. Consider that the formed water is in the liquid state. Then, identify the type of reaction in terms of heat release or absorption and justify your answer.Answer sheet:
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