Given the following: S8 (g) + O₂(g) → SO₂ (g) 3 8(g) +02 (g) → SO3 (g) The heat of reaction for SO₂ (g) + O₂(g) → SO3 (g) is O-98.9 kJ -692.5 kJ +98.9 kJ O O+692.5kJ AH = -296.8 kJ AH = -395.7kJ

Q: An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. AH°F…

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Q: 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data: N2 (g) + O2 (g) → 2 NO (g) AH…

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Q: 5. Given the following data calculate AH for the reaction: NO (g) + 0 (g) → NO2 (g) Data 202(g) →…

A: Heat of reaction is defined as difference of energy of product  and energy of Reactant. If heat of…

Q: Calcium hydroxide, which reacts with carbon dioxide to form calcium carbonate, was used by the…

A: Given, moles of CaCO3 formed = 3.8 mol

Q: Given the AH for the following reactions, P4(s) +6C12(g) →→ 4PC13 (8) AH = -2439 kJ 4PC15(g) → P4(s)…

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Q: Consider these reactions: Reaction 1: H2 (9) + Cl2 (g) → 2HC1(9) AH=-184.6 kJ %3D Reaction 2: 20F2…

A: ->If ∆H = +ve => reaction is endothermic reaction ->if ∆H = ,-ve => reaction is…

Q: 40. Determine the enthalpy of the reaction: S (s) + 3/2 O2 (g) → SO; (g), given the following…

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Q: Based on the following equation what is the heat of formation, AHf", for H2O(1) * 2 H,(g) + 0,(g) –…

A: Enthalpy of formation is the change of enthalpy for the formation of 1 mole of a compound from it's…

Q: Given the following reactions N2 (g) + O2 (g) → 2NO (g) 2NO(g) + O2(g) → 2N (g) the enthalpy of…

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Q: The standard enthalpy of formation of CO(g) is –111 kJ/mol [refer to this equation C(s) + 1/202g) →…

A: Interpretation -  To determine the enthalpy (∆Ho) for the reaction which is given as - 2C(s) + O2…

Q: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Given reactions are  1) CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l),…

Q: Given the following reactions:             N2(g) + 2O2(g) → 2NO2(g)      ΔH = 66.4 kJ…

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Q: Given the following reactions:             N2(g) + 2O2(g) → 2NO2(g)      ΔH = 66.4 kJ…

A: • The desired equation is,       N2(g) + O2(g) → 2NO(g) ; ∆H= ??    • The given thermochemical…

Q: Calculate AH for the reaction NH3 (g) + 5 02 (g) → 4 NO (g) + 6 H20 (g). from the following data. N2…

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Q: Using the information provided, determine the enthalpy (in kJ/mol) for the reaction C₃H₈ (g) + 5 O₂…

A: Given,            ∆Hf°C3H8(g) = -108.4  KJ/mole.             ∆Hf°O2(g) = 0  KJ/mole.…

Q: Given the reaction 2 Cl2 (g) + 2H₂O(g) → 4HCl(g) + O2(g) What is AHO of this reaction? AHO Cl₂ = 0…

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Q: Consider the following reactions: (1) N2(g) + O2(g) → 2NO(g) AH = +180.7 kJ (2) 2NO(g)+ O2(g)…

A: Dear student I have given answer to your question in the image format.

Q: Calculate the standard enthalpy for the reaction: 4NH:(g) + 5O:(g) → 4NO(g) + 6H;O(g), through:…

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Q: Calculate the standard enthalpy change for the following reaction: 2CH3OH(l)   +   3O2(g)   →…

A: Heat released and absorbed during a reaction by change in bonding is defined as heat of reaction or…

Q: CH3OH (l) + 3/2 O2 (g) → CO2 (g)  + 2 H2O (l), ΔH = -726.4 KJ/mol C (graphite) + O2 (g)  → CO2 (g),…

A: Hess’s law of constant heat summation- Change in enthalpy for a reaction is independent on path or…

Q: You wish to find the enthalpy for the reaction 6 Gel (s) + 14 NHI (s) → 3 Ge:H6 (1) + 7 N2 (g) + 38…

A: The enthalpy for the first reaction is determined as follows. 2Ge (s)+3H2g→Ge2H6l  ∆H=137.3 kJ/mol,…

Q: If 0.067 mol of hydrochloric acid  (HCl)  is mixed with 0.067 mol of sodium hydroxide  (NaOH)  in a…

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Q: Consider the following reaction: 2 Mg(s) + O2(g) --> 2 MgO(s)      ΔH = - 1204 kJ/rxn   Is this…

A: In an exothermic reaction heat is evolved in the surroundings and the container becomes hot after…

Q: 2. Calculate the reaction enthalpy for the following reaction: C(s) + H20(g) → CO(g) + H2(g) Use the…

A: The Given reaction  C(s) + H2O(g)  → CO(g)  + H2(g) Given following data Reaction 1 :  C(s) + O2(g)…

Q: Consider these reactions: Reaction 1: H₂(g) + Cl₂(g) → 2HCl(g) Reaction 2: 20F₂ (g) → O2(g) + 2 F₂…

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Q: Use Reaction 2. How much energy (in kJ) is released when 49.0 g of oxygen difluoride decomposes?…

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Q: Consider these reactions: Reaction 1: H₂(g) + Cl₂ (g) → 2HCl(g) Reaction 2: 20F2 (g) → O2(g) + 2 F2…

A: Recall the Reaction 1,                                    H2 g + Cl2 g → 2 HCl g…

Q: Determine the enthalpy of reaction for P4010(s) + 6PCIs(g) - 10POCI3(g) ->> P4(s) + 6Cl₂(g) ->>…

A: we have to calculate the enthalpy of reaction, P4O10 + 6PCl5 ----> 10POCl3       ∆H° = ?

Q: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…

Q: Determine the enthalpy of reaction for HCI(g) + NaNO2(s) → HNO2(1) + NaCl(s) 2NACI(s) + H2O(1) →…

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Q: The enthalpy (or heat) of combustion of acetone, (CH3)₂CO, is-1657.8 kJ. The reaction is (CH₂)2CO…

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Q: With a platinum catalyst, ammonia will burn in oxygen to give nitric oxide, NO. 4NH3 (9) + 502 (g) →…

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Q: Which of the following represents an endothermic reaction? H2(g) + F2(g) –→ 2 HF(g) AH= -542 kJ C(s)…

A: The question is based on the concept of chemical thermodynamics. we have to identify the endothermic…

Q: What is the enthalpy change of the following reaction: WO3 (s) + 3 H2 (g) → W (s) + 3 H2O (g) given…

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Q: Given the standard enthalpy changes for the following t (1) 2Ni(s) + O2(g) 2N¡O(s) AH° = -479.4 kJ…

A: In classical thermodynamics, the difference between the enthalpy of reactants and products is known…

Q: A 3.59°C increase in temperature occurs when a 0.232 g sample of benzoic acid (C7H6O2) is combusted…

A: Heat of combustion if benzoic acid = -26.37 KJ/mol Mass of benzoic acid = 0.232 g Heat releases =…

Q: ΔΗ- kJ

A:

Q: Given the following combustion reaction and its molar enthalpy of reaction: 2NO(g) + O2(g) 2NO2(g)…

A: Given reaction: 2NO(g) + O2(g) → NO2(g)             ΔHo = -112 KJ

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.