9. Use the standard enthalpies of formation in the table to answer the questions below Compound CO(g) CO:(g) AH", (kj/mol) AH", (kJ/mol) Compound H;O(I) Fe;O:(s) -110.4 -285.8 -393.7 -822.2 a. Calculate the standard enthalpy of reaction for the equation Fe;Os(s) + 3 CO (g) → 2 Fe(s) + 3 CO2(g) b. The standard enthalpy of reaction for the equation below is -3535 kJ. Calculate the enthalpy of formation of CsH,2(1). C;H12(1) + 802(g) → 5 CO:(g) + 6 H20(1)

Q: Calculate the enthalpy change for reaction (a), given the data in equations (b), (c), and (d). AH =…

A: The objective of the question is to calculate the enthalpy change for the reaction (a) using the…

Q: The thermite reaction, in which powdered aluminum reacts with iron oxide and yields aluminum oxide…

A: Thermite reaction is the reaction between a metal and a metal oxide. In this reaction, the metal…

Q: Use Hess's Law to calculate the enthalphy change for the reaction: CH4(g) + H₂O(g) -> CO(g) + 3…

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

Q: 84. The standard enthalpy of combustion of ethene gas, C,H4(g), is - 1411.1 kJ/mol at 298 K. Given…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Fe(s) + 02(g)2FEO(s) AH° =…

A:

Q: Based on this value and the standard enthalpies of formation for the other substances, the standard…

A: Standard enthalpy of formation is the change in enthalpy that accompanies the formation of one mole…

Q: A scientist measures the standard enthalpy change for the following reaction to be -138.8 kJ : H2(g)…

A: The given reaction is as follows: H2(g)+C2H4(g) → C2H6(g) The standard enthalpy change for the…

Q: Find the enthapy change for the reaction below in kJ .                   4NH3(g)  + 5O2(g) -->…

A: Given,  4NH3(g)  + 5O2(g) --> 4NO(g) + 6H2O(g)     ΔH= ?  (NH3(g)) = -46.1,         (NO(g)) =  +…

Q: Use Hess's law to calculate enthalpy change. Given the following two reactions: (1)Ca(s) + Cl½(g)…

A:

Q: Given the standard reaction enthalpies for these two reactions: (1) N2(g) + 20,(g) →N2O4(g) A,H° =…

A: Given  N2(g) +  2O2(g)   →  N2O4(g)                ∆rH°  =  9.2 KJ/mol                 [ Equation 1…

Q: Using the data provided below, calculate the standard enthalpy change for the following reaction:…

A: The difference in the enthalpy of the products and reactants is known as the enthalpy of reaction.…

Q: The combustion of ammonia is : 4NH3(g)+5O2(g)--> 4NO(g)+6H2O(g)        DeltaH= -905kJ what is the…

A: Given Heat of formation data: NO(g) = 90.4 kJ/ mol H2O(g) = -241 kJ/mol 4NH3(g)+5O2(g)-->…

Q: Calculate the enthalpy for this reaction: 2C(s) + H2(g) ---> C2H2(g) ΔH° = ??? kJ Given the…

A:

Q: A certain hydrocarbon of the molecular formula C,H2, has a standard enthalpy of formation AH, =…

A: For the combustion reaction, the chemical equation is shown by equation (1) and the value for x is…

Q: Consider the reaction H2(g) + %O2(g) – H20() AH° = -286 kJ Which of the following is true? The…

A: Exothermic reaction Reaction in which heat released   Endothermic reaction Reaction in which heat…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) + O2(g)-2P6O(s) AH°…

A: Given,

Q: Determine the enthalpy of reaction for P4O10(s) + 6PCI5(g) → 10POCI:(g) P4(s) + 6CI2(g) → 4PCI3(g)…

A: P4 (s) + 6Cl2 (g) ------> 4PCl3(g) ΔH = -1225.6 KJP4 (s) + 5O2 (g) --------> P4O10 (s) ΔH = -…

Q: 4. The table below shows the standard enthalpy of formation of carbon dioxide, water and…

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: P3(g) S(s) + O2(g) → SO2(g) A;H°;(SO2,g) = -297kJ/mol 2 SO3(g) → 2 SO2(g) + O2(g) AH°2 = 198KJ/mol D…

A: We have ∆H value of two reaction and calculate for other equation so we have to do experiment with…

Q: Calculate the standard enthalpy of reaction for the combustion of methane. Round to the nearest…

A: The standard enthalpy change of a chemical reaction represents the heat content of a system and the…

Q: 8. Calculate the enthalpy of decomposition of dinitrogen pentoxide in the following reaction: 2…

A: Hess's law is defined as the law which states that the total amount of heat absorbed or released for…

Q: Given the following data: AH°¡[FeO(s)l = -270 kJ/mol; AH°† [Fe2O3(s)l = -820 kJ/mol. Select the…

A: The balanced reaction taking place is given as, Given : ΔHof [FeO(s) ] = -270 KJ/mol And ΔHof…

Q: Given: 2NH3(g) + 3N20(g) → 4N2(g) + 3H20(1) ....AH1 = -1010 kJ 4NH3(g) + 302(g) → 2N2(g) + 6H2O(1)…

A:

Q: 10. Calculate the standard enthalpy of formation of N₂O5 from the following data: kJ mol kJ "mol kJ…

A: Standard enthalpy of formation: It is the enthalpy change when 1 mole of a compound is formed from…

Q: Given the standard enthalpy changes for the following two reactions: (1) Hg(1) + Cl,(g)→HgCl,(s) AH°…

A: The reactions given are,

Q: A chemist measures the energy change AH during the following reaction: C,Hg(9)+50,(9) → 3 CO 2(g)+…

A: Answer :-  a) Exothermic  b) Yes, released  c) 1.83 × 103 kJ…

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: From the change in internal energy, AE, given for 40 °C, calculate the change in enthalpy, AH, at…

A: Internal energy = -151.3 KJ T = 40°C = 40 + 273 = 313 K

Q: Consider the following two reactions and write down the balanced chemical equations. Reaction 1:…

A: Enthalpy of a reaction at a given temperature is defined as the enethalpy change produced in the…

Q: Using the data provided below, calculate the standard enthalpy change for the following reaction:…

A: We will use enthaply of formation of both products and reactants to calculate enthalpy of reaction.

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + 02(g)→2N¡O(s) AH°…

A: Given, 1) 2Ni(s) + O2(g) ➝ 2NiO(s)    ∆H° = -479.4 kJ 2) 2Hg(l) + O2(g) ➝ 2HgO(s)  ∆H° = -181.6 kJ…

Q: Given the following two reactions: (1)Fe(s) + Cl2(g)->FeCl2(s) H(1) = -341.8 kJ (2)Hg(l) +…

A:

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) =…

Q: How much heat is produced when 0.480 mol of methane is burned under standard conditions. Enthalpy of…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + O2(g) →2NO(g) AH° =…

A: According to Hess's law, when a reaction occurs in more than one step than the enthalpy change of…

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.