5. Calculate the enthalpy of the following reaction: Given: 2Mg + O₂ → 2MgO 2 Mg + 2HCI → MgCl₂ + H₂ MgO + 2HCl → MgCl₂ + H₂O H₂ + 1/2O₂ → H₂O AH-21.0 kJ ΔΗ = -33.5 kJ AH = -76.0 kJ

Q: calculate the enthalpy change for the following reaction: (3) FeCl₂(s) + Hg(1)→→→ Fe(s) + HgCl₂(s)…

A:

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: The standard enthalpy change for the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

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: 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…

A:

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

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

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

A:

Q: From the enthalpies of reaction: 2 C(s) + O2(g) → 2 CO(g) ΔH =…

A:

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…

A:

Q: Calculate the enthalpy of reaction for the following reaction: NaOH(s) + HCI(g) ----> NaCI(s) +…

A: Given  Enthalpy of Formation of NaCl(s)   = - 411 KJ/ mole  Enthalpy of formation of H2O(g)    =…

Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

A:

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

A:

Q: Given the following: S8 (g) + O₂(g) → SO₂ (g) 3 8(g) +02 (g) → SO3 (g) The heat of reaction for SO₂…

A: To calculate the heat of reaction for given reaction, we need to modify the given two reactions for…

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: Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,479.0…

A:

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

A:

Q: The standard enthalpy change for the following reaction is -56.0 kJ at 298 K. Na(s) + 1/2 H₂(g)…

A: Important points needs to be remember for enthalpy change If a given chemical reaction is reversed…

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

A:

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: The standard enthalpy change for the following reaction is -112 kJ at 298 K. 2 Na(s) + H2(g)…

A: The standard enthalpy change for this reaction at 298 K has to be determined

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: Use the following information to determine the enthalpy for the reaction shown be CHĄ(g) + H2O(g) →…

A: We have to find enthalpy of reaction.

Q: What is the enthalpy change for the first reaction? Fe2O3(s) → 2Fe(s) + 3/2O2(g) ΔH =  4Fe(s) +…

A:

Q: The standard enthalpy change for the following reaction is -425 kJ at 298 K. AH° -425 kJ K(s) +…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: 3. Calculate the enthalpy change for the reaction P406 (s) + 2 02 (9) - P4010 (s) given the…

A:

Q: As an alternative to combustion, coal gas can undergo a process called methanation.  3 H2(g)  +…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g)–2PBO(s) AH°…

A: Consider the given thermochemical equations is as follows; 1 2 Pbs   +  O2g  →  2 PbOs…

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

A:

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

A:

Q: The standard enthalpy change for the following reaction is 450 kJ at 298 K Cu(OH)2(s) → Cu(s) +…

A: Given:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O2(g)–→2N¡O(s) AH°…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

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: ΔΗ- kJ

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O₂(g) → 2PbO(s)…

A:

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.