Given:  (a) BCl3 + 3H2O →H3BO3 + 3HCl                    ∆H =-112.5kJ   (b) B2H6 + 6H2O →2H3BO3 + 6H2                   ∆H = -493.4 kJ (c ) ½ H2 + ½ Cl2 → HCl                                   ∆H = -92.3 kJ Calculate the value of ∆H for the reaction: B2H6 + 6Cl2 → 2BCl3 + 6HCl                      Select one: a. -1457.0 b. -1376.0 c. -1656.0 d. -1762.0

Q: Calculate the ∆Hof of C6H12O6(s) from the following data:  ∆H combustion of C6H12O6(s) =…

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Q: 3Cu2+(aq)+2Fe(s)↽−−⇀3Cu(s)+2Fe3+(aq) ΔrH∘=−288kJ/mol What is the value of ΔrG?

A: 3Cu+2 (aq)+2Fe(s)↽−−⇀3Cu(s)+2Fe+3 (aq) ΔHorxn =−288kJ/mol

Q: Why is it often more convenient to measure ∆H than ∆E?

A: ∆H is equal to heat change at constant pressure and ∆E is equal to heat change at constant volume.…

Q: Find the heat of reaction and explain what happen to it. Calculate the ∆H of reaction for: C3H8 (g)…

A: Solution - C3H8 (g) + 5O2 (g) →→ 3CO2 (g) + 4H2O (l)      ∆H∘rxn =∑∆H°f,products-∑∆H°f,reactants…

Q: A reaction of decomposition of a compound AB is  accompanied by absorption of some heat energy. What…

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Q: Find the heat of reaction and explain what happen to it. Calculate the ∆H of reaction for: C3H8 (g)…

A: C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l)      ∆Hrxn° = ∑∆H°f,products-∑∆H°f,reactants   ∆Hrxn° = 3 x…

Q: Calculate ∆Gº for the reaction, 2C2H6(g)+5O2(g)→4CO(g)+6H2O(g), given ∆Gºf for C2H6(g)=-32.9 kJ/mol,…

A: 2C2H6(g)  +  5O2(g)  →  4CO(g)  +  6H2O(g) ∆Gºf for C2H6(g)=-32.9 kJ/mol, ∆Gºf for CO(g)=-137.2…

Q: determine the enthalpy change for reaction 1. (1)         Mg(s) + 1/2O2(g) → MgO(s)…

A: Hess' law of constant heat summation: The Hess law states that the change of enthalpy in a chemical…

Q: Which of the following processes would you predict to have the most favorable ΔSº?     CH3OH(g)  →…

A: Entropy  It is defined as the randomness present in the system. If the randomness is more then…

Q: Find the ∆H for the reaction below, given the following reactions and subsequent ∆H values: H2SO4…

A: The given equations are:  H2Sg + 2O2g → H2SO4l                  ∆H = -235.5 kJ  ……1 H2Sg + 2O2g →…

Q: thermochemical equation

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Q: Using the equations N₂ (g) + 3 H₂ (g) → 2 NH₃ (g) ∆H° = -91.8 kJ/mol C(s) + 2 H₂ (g) → CH₄ (g) ∆H° =…

A: Answer:- This question is answered by using the simple concept of Hess Law of constant heat…

Q: CH4(g) + 2 Cl2(g) → CH2Cl2(g) + 2 HCl(g) Calculate ∆Hrxn° using the following data: CH3Cl(g) +…

A: Using Hess's law  Enthalpy of reaction is same for a reaction if the reaction is completes in…

Q: Q5: Calculate the ΔGrxn° for: N2O(g) + NO2(g) → 3 NO(g) Given: 2 NO(g) + O2(g) → 2 NO2(g) ΔGrxn° =…

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Q: Find the ∆H for the reaction below, given the following reactions and subsequent ∆H values: H2SO4…

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

Q: Given these values, ΔHorxn = -95 kJ; ΔSorxn = -157 J/K; T = 298 K; determine ΔSuniv.     -162 J/K…

A: Answer:- This question is answered by using the simple concept of calculation entropy change of the…

Q: Using the equations N₂ (g) + O₂ (g) → 2 NO (g) ∆H° = 180.6 kJ/mol N₂ (g) + 3 H₂ (g) → 2 NH₃ (g) ∆H°…

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

A: Given : Consider,  1) NO(g) + O3(g) → NO2(g) + O2(g)             ∆H1 = - 198.9 kJ 2) O3(g) → 3/2…

Q: determine the enthalpy change for reaction 1. (1)         Mg(s) + 1/2O2(g) → MgO(s)…

A: The reactions given are, (1) Mg(s) + 1/2O2(g) → MgO(s)                                          ∆H1…

Q: Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25oC, diamond changes to…

A: To find: ∆H for the reaction

Q: Consider the following equation: 2 CH3OH (ℓ) + 3 O2 (g) à  4 H2O (ℓ) + 2 CO2 (g)         ∆H =…

A: The heat of reaction is a thermodynamic unit of measurement. It is the amount of energy either…

Q: Below is a list of Enthalpies of Formation. Substance Δ??(?????)ΔHf(kJmol) C3H8(g) -104.7 O2(g) 0…

A: Introduction: The total amount of energy of a system is called enthalpy and the heat of formation is…

Q: Which value corresponds to a larger Keq: ΔGo = −8 kJ/mol or ΔGo = 20kJ/mol?

A: The relation between Keq and ΔGo is shown below.

Q: A certain reaction has ∆H ° = +23.7 kJ and ∆S° = +52.4 J>K. (a) Is the reaction exothermic or…

A: ∆H ° = +23.7kJ If for any chemical reaction ∆H ° is positive, the reaction will be endothermic…

Q: Using the equations N₂ (g) + O₂ (g) → 2 NO (g) ∆H° = 180.6 kJ/mol N₂ (g) + 3 H₂ (g) → 2 NH₃ (g) ∆H°…

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Q: Calculate q, AH and AU for the process during which 2 mol NO2 is heated at a constant pressure of 1…

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Q: How to determine the overall ΔHo for a reaction ?

A: The branch of chemistry that deals with the flow of heat and the calculation of the amount of work…

Q: Calculate ∆H for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data.…

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Q: 4 NH3 (g)   +   5 O2 (g)      4 NO (g)   +   6 H2O (g)                       ∆H  =  -905 J   What…

A: If Equation is multiplied by 3 the Change in energy will also be three times.

Q: ∆H rxn

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Q: Standard molar entropies for CO(g), CO2(g), and O2(g) are 197.9, 214.0, and 205.0 in J/mol K,…

A: Entropy Entropy is the measure of disorder in a reaction. When an amount of energy is added to a…

Q: For ionization energy, when is it more unfavorable? How does this relate to the ∆H ?

A: Unfavourable ionization energy means greater amount of energy requirements.  This is possible due to…

Q: Draw a (hess diagram) enthalpy diagram to calculate the ∆Hfc2 H5 OH using the following date ∆Hcc =…

A: Hess's law is an important rule in thermodynamics. It states that the heat absorbed by or escaped…

Q: Given that the ∆H for the following reaction below is -534 kJ, determine the ∆Hfo for N2H4(l)…

A: The balanced chemical reaction is, N2H4l+O2g→2H2Og+N2g......(1) The enthalpy of the above reaction…