The standard enthalpy of reaction, AH rxn, for the reaction, CaO(s) + SO3(g) → CaSO4(s) is -401.5 kJ mol 1. Determine the value of AE n for this reaction. -362.2 kJ mol1 O -2880 kJ mol-1 O -399.0 kJ mol1 O +2077 kJ mol1 O -404.0 kJ mol-1

Q: The standard enthalpy change for the following reaction is -511 kJ at 298 K.Br2(l) + 3 F2(g)--->2…

A: The objective of the question is to find the standard enthalpy change for the reaction 1/2 Br2(l) +…

Q: Calculate the enthalpy change for the reaction C2H2(g) + 2H2(g) → C2H6(g)     ΔrH = ? from the…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: The combustion of ammonia is : 4NH3(g)+5O2(g)--> 4NO(g)+6H2O(g)        DeltaH= -905kJ what is the…

A: Given Heat of formation data: NO(g) = 90.4 kJ/ mol H2O(g) = -241 kJ/mol 4NH3(g)+5O2(g)-->…

Q: Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) 2. НСI(9) — 2…

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Q: che enthalpy change AH d

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Q: The standard enthalpy change for the following reaction is -467 kJ at 298 K. Na(s) + 1/2 N2(g) + 3/2…

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Q: Which of the following reactions is exothermic? ¹/2 N₂(g) + ¹/2O₂(g) + 90.7 kJ ® NO(g) CO(g) + 111…

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Q: Calculate ΔH for the following reaction: 4 Cu(s) + 2 NO2 (g) → 4 CuO(s) + N2(g) Given the following…

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Q: Calculate the enthalpy change for the reaction of ti

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Q: A chemist measures the enthalpy change AH during the following reaction: PĄ(s) + 6 Cl,(g)→4 PCI3(g)…

A: Answer:- This question is answered by using calculation of enthalpy of reaction using the standard…

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Al(OH);(s)→Al,03(s) + 3…

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Q: Calculate Δ­H for the reaction  NO(g) + O(g) → NO2(g) given the following information: NO(g) +…

A: Introduction The value of heat of reaction can be calculated by the application of Hess's Law.

Q: Use the data given below to find the enthalpy of reaction for the following reaction: CaCO3(s) →…

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Q: Given: 2NH3(g) + 3N20(g) → 4N2(g) + 3H20(1) ....AH1 = -1010 kJ 4NH3(g) + 302(g) → 2N2(g) + 6H2O(1)…

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Q: Given the standard enthalpy changes for the following two reactions: (1) Hg(1) + Cl,(g)→HgCl,(s) AH°…

A: The reactions given are,

Q: 2. Express the reaction enthalpy for the reaction: B + C →5E +z" 1 1 E +5F in terms of the reaction…

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Q: Calculate the enthalpy change for the reaction C2H2(g) + 2H2(g) → C2H6(g)     ΔrH = ? from the…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: O2 Mg(s) + 0,(g) → 2 MgO(s) + heat O NH, (g) + HCI(g) NH,Cl(s) + heat AgCl(s) + heat → Ag*(aq) + CI…

A: Exothermic reactions are reactions or processes that release energy, usually in the form of heat or…

Q: Determine the enthalpy of reaction for HCI(g) + NANO,(s) → HNO,(1) NaCl(s) 2NACI(s) + H,O(1) →…

A: When a thermochemical equation is reversed is ∆H value changes its sign When a thermochemical…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.