What is the enthalpy change for the following reaction? SiCl 4 (l)+2H 2 (g) Si(s)+4HCl(g)

Q: Calculate the enthalpy of reaction for H2(g) + C2H4(g) → C2H6(8). [AH F(C2H4(E)) = 52.3 kj/mol; AH…

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

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Q: estimate the enthalpy change for the following reaction: CH3OH(g) + HI(g)CH3I(g) + H2O(g)

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Q: For the reaction H2(g) + 1 2O2(g) --> H2O(l)        ΔH = -286 kJ/mol    What is the enthalpy…

A: Balanced chemical equation: H2(g) + 1/2O2(g) --> H2O(l)        ΔH = -286 kJ/mol  Heat change per…

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A: The formation of hydrogen fluoride from hydrogen gas and fluorine gas is expressed as, H2g+F2g→2HFg…

Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g), given the…

A: Given;

Q: 1. Calculate the enthalpy for this reaction: 3NO 2 (g) + H 2 O(ℓ) ---> 2HNO 3 (aq) + NO(g) given…

A: Given reactions are : 1). 2NO (g) + O2 (g) -----------> 2NO2 (g),  ΔH1o = ─ 116 kJ2). 2N2 (g) +…

Q: In general, automobile engines are connected to a lead-acid accumulator. During discharge, the…

A: We are give an chemical reaction which occurs and lead acid accumulator and asked to calculate its…

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

A: Recall the given reactions,                          1 2 Pb s  +  O2 g  →  2 PbO s…

Q: Using standard heats of formation, calculate the standard enthalpy change for the following…

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Q: 12. Consider the following process. + 2H,O(e) AH = -802 kJ %3D CH4 (8) + 202 (8) 2 CO2 (8) A) Is the…

A: We have to predict the change in enthalpy and it's nature.

Q: Given the standard enthalpy changes for the following two reactions: ΔΗ° = 66.4 kJ (1) N₂(g) +202(g)…

A: -> When equation is multiplied with any constant then enthalpy also multiplied with that…

Q: Calculate the standard enthalpy change (kJ/mol) for the following process given the enthalpies of…

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Q: Determine the enthalpy (in kJ/mol) for the reaction 3 SiCl₄ (s) + 4 Fe (s) → 4 FeCl₃ (s) + 3 Si (s)…

A: To solve this we have to do some  mathematical operations with the given  two equations to get the…

Q: Which is the correct enthalpy level diagram for the reaction: CaO(s) + 3C(s) + 462.3 kJ → CaC2(s) +…

A: When a reactant converts into the products , there is some heat released or absorbed by the…

Q: Given that:  S(s) + O2(g) --> SO2(g); ΔH = -296.8 kJ/mol 2 SO3(g) --> 2 SO2(g) + O2(g); ΔH = +197.8…

A: S(s) + O2(g) --> SO2(g); ΔH = -296.8 kJ/mol2 SO3(g) --> 2 SO2(g) + O2(g); ΔH = +197.8 kJ/mol

Q: 7. Calculate the enthalpy of the following reaction. F + HBr H₂O 5 OH Br + + HF HI

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

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Q: Determine the enthalpy of reaction for 2CH4(g) → C2H«(g) + 2H2(g) using the equations: 2C2H6(g) +…

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

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Q: A sample of natural gas is 80.0% CH4 and 20.0% C2H6 by mass. What is the heat from the combustion of…

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Q: Determine the enthalpy for the following reaction, given A (NH3(g)) = -46.1 kJ/mol, AH (NO(g = +90.3…

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Q: Calculate the change in enthalpy of the following reaction. ΔH (Fe3O4) = -1120.9 kJ  ΔH (Al2O3) =…

A: Given -> 8Al(s) + 3Fe3O4(s) ---> 4Al2O3(s) + 9Fe(s)  ∆Hf(Fe3O4) = -1120.9 KJ  ∆Hf(Al2O3) =…

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.