Calculate AHxn for the following reaction: 2C2H4 (g) + 2H2 (g) 2C2H6 (g) Using the following data and Hess's Law. C2H4 (g) + 302 (g) 2CO2 (g) + 2H20 (g) AH = -1411 kJ 2C2H6 (g) + 702 (g) → 4CO2 (g) + 6H20 (I) AH = -1560 kJ 2H2 (g) + O2 (g) → 2H20 (g) AH= -285.8 kJ

Q: 42. Calculate Use Hess's law to determine AH for the reaction NO(g) + 0(g) → NO₂(g) AH = ? given the…

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

Q: 1. Calculate A H for 2S (s) + 302 (g) → 6FE203 based on the reactions: 2H2S (g) + 302 (g)→2SO2(g) +…

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Q: Use the thermochemical equations below to determine the AHXN expression for: 2 N20(g) → 2 N2(g) +…

A: When we reverse the reaction, then enthalpy for the reversed reaction will be the same as the…

Q: Given the following data: Cl2(g) + 5F2(g) → 2ClF5(g) ΔH°=-510.0 kJ ClF3(g) + Cl2(g) → 3ClF(g)…

A: The question is based on the concept of Hess's law. It states that the net enthalpy change during a…

Q: Calculate the enthalpy change of the reaction below using Hess's law.   S(s) + O2(g) → SO2(g) (1) 2…

A: Hess's law: the amount of heat involved in producing one chemical from another is always the same,…

Q: Using the unrounded answer from the previous problem determine q (kJ)(-3512.25kj)  for the following…

A: The question is based on the concept of thermodynamics . We have to calculate heat released for…

Q: Using the following data and Hess's law; 2 SO22) + O2g) →2 SO3«g) AH°= -197.8 kJ 2 NOg) + Ozgg) →2…

A: SO2 (g) + NO2 (g) →SO3(g) + NO(g)  To get the desired reaction ∆H° value we have to adjust the given…

Q: C 2H 5OH() + 30 2( g)→ 2CO 2( g) + 3H 20( ) AH=-1.37 x 10 3 kJ I. The reaction is endothermic II.…

A: Exothermic reaction is the reaction in which energy is released in the formation of products while…

Q: A chemist measures the enthalpy change AH during the following reaction: 3 N₂(g) + 8H₂(g) →4 NH3(g)…

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Q: Estimate the enthalpy change for the following reaction: 2 CH4 (g) + 2 O2 (g) → CH2CO (g)+ 3 H2O (g)…

A: Hess Law According to Hess law, a chemical change occur through different routes but the overall…

Q: Upload the answer to this question here as an image. You must show your work. Given the following…

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Q: How do I solve this

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Q: Given reactions A- C, determine the the change in enthalpy (kJ) for the reaction between C3H8(g) +…

A: Given (A) 3Cs+4H2g→C3H8g        ∆H=-104.7 KJ(B) Cs+O2g→CO2g               ∆H=-393.51 KJ(C) H2g+1/2…

Q: Given the data:       N2(g) + O2(g) ---> 2NO(g)             DH = +180.7 kJ       2NO(g) + O2(g)…

A: (1) N2g + O2g → 2NOg         ∆H = +180.7 KJ   2NO(g) + O2(g) → 2NO2(g)       ∆H = -113.1 KJ…

Q: Ammonia will burn in the presence of a platinum catalyst to produce nitric oxide, NO. 4NH3(g) +…

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Q: The propane fuel (C3H8)(C3H8) used in gas barbeques burns according to the following thermochemical…

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Q: 2. Ethanol (C₂H5OH) is currently blended with gasoline as an automobile fuel. (a) Write a balanced…

A: ∆H = Sum of Enthalpies of products - Sum of Enthalpies of reactants  Density = Mass/Volume

Q: 7N2(9) +5H2(9) → NH3(g) AH = -46KJ z H2c9) +Clz@) → HCl) N2(9) +4H2(9) + Cl29) → 2NH¼C\(s) → HCl(g)…

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Q: The enthalpy changes for three compounds are shown below: N2(g) + 5/2 O2(g) + 15.0 kJ H2(g) + 1/2…

A: An EXOTHERMIC thermochemical reaction equation is written as Reactants ------> products + HeatOr…

Q: 3H2 (g) + CÓ (g) → CH4 (g) + H2O (g) Use Hess's Law to determine the enthalpy change for this…

A: The reactions given are, 1) 2) 3) 4)

Q: Given the following thermochemical equations with hypothetical AH values: 2NH3 (g) + 3N2O (g) → 4N2…

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Q: Enthalpy change for 2 SO2(g) + 2 P(s) + 5 Cl2(g) 2 SOCl2(l) + 2 POCl3(l) SOCl2(l)  +  H2O(l)  SO2(g)…

A: The balanced chemical reaction for which the enthalpy change has to be calculated is given below.

Q: 2NO(g) O2(g) - 2NO2(g), AH=-113.1 kJ 2N20(g) 2N2(g) + O2(g), AH=-163.2 kJ -> use Hess's law to…

A: Use ∆H equation and do experiement to get resulting equation. ∆H rxn= 43.53kj

Q: Given the following thermochemical equations: 1) 2N2(g) + 202(g) → 4NO(g) AH = 2(-180.5 kJ) 2)…

A: Calculate then enthalpy of the given reaction --

Q: Given the following enthalpy change values for the reactions below: A + B → 2C; AH = 286.5 kJ mol-1…

A: Given A + b → 2C ; ΔrH = 286.5 kJ/mol C + 2D → E + F; ΔrH = 41.8 kJ/mol H → (1/2)E + G ; ΔrH = 41.8…

Q: How do I calculate the enthalpy change for the reaction: NO (g) + O(g) → NO2 (g)

A: Given: NO (g)+O3 (g)→NO2 (g)+O2 (g)                          ∆H=-198.9 kJ/molO3 (g)→3/2 O2 (g)…

Q: Calculate the enthalpy of the following reaction using the data in the table. 1A +4B + 5C → 5D + 1E…

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Q: How many g of Ca reacted?

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Q: Given the following data: Na(g) + O2(g) O2(g) 2N20(g) → 2NO(g), AH = +180.7 kJ AH =-113.1 kJ 2NO(g)…

A: As per Hess’s law, regardless of the steps used in product formation, the change in enthalpy of the…

Q: Using Hess's Law determine the delta H for the following reaction, likewise, note if the reaction is…

A: Using hess's law we have to determine ∆H for a given reaction.

Q: Select the equation which is the correct reaction for the enthalpy of formation of potassium…

A: enthalpy of formation is defined as the change in energy  when 1 mole of substance is formed from…

Q: Calculate Hrxn using Hess’s Law. Determine if exothermic or endothermic. P4(s) + 6Cl2(g) ---> 4PCl3…

A: Given, P4(s) + 6Cl2(g) ---> 4PCl3 (g) DeltaH = -1225.6 kJP4 (s) + 5O2(g) ---> P4O10 (s) DeltaH…

Q: Given the following thermochemical equations → 4PCI3(g) P4(s) + 6CI2(g) 4PCI5(g) → P4(s) + 10CI 2(g)…

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Q: 2 NO(g) N2(g) + O2(g)   H = -180.7 kJ 2 NO(g) + O2(g) 2 NO2(g)   H = -113.1 kJ 2 N2O(g) 2 N2(g) +…

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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.