From the following data, determine AfH° for diborane, B2H6(g) at 298 K 8 B2H6(g)302 (g) O2(g) :-1941 kJ mol-1 A,H® B2O3(s) 3 H2O(g) A,H° =-2368 kJ mol-1 + 2B(s) 2 В-0:(s) O2(g) Н-0(g) A,Ho -241.8 kJ mol-1 H2(g)

Q: Calculate ASurr at 298 K. uns ZnS(s) + 202(g) ZNSO4(s) AH°=-777 kJ O ASsur = +114 kJ/K %3D O ASsurr…

A: Answer: option c. ∆Ssurr = +2.61 kJ/K

Q: Consider the reaction B(s) + O2(g)→B2O3(s), AH = -1270kJ What will AH be for the reaction if it is…

A: Interpretation - To determine the ∆H for the reversed reaction.    Concept- Enthalpy change for a…

Q: Calculate delta H degrees for the process: CO3O4(s) = 3CO(s) + 2O2(g) fromt he following…

A: This calculation is based on hess law which states enthalpy change of a reaction remains same…

Q: _16. Use the following data to calculate AG° at 298 K for the combustion of propane: OG, kmol…

A: The ∆G° of a reaction can be expressed as the difference between the ∆G° formation of products and…

Q: A 20.2 g quantity of neon changes temperature from 30oC to 160oC at constant pressure. Assuming neon…

A:

Q: The element mercury, Hg, is a silvery liquid at room temperature.  The normal freeing point of…

A: In this question, we want to determine the ∆S value means entropy change in J/K unit. You can see…

Q: A system undergoes a transformation for which ASsys 0. The transformation will definitely be…

A: Gibbs free energy : ΔG = ΔH - ΔS For a process to be spontaneous, ΔG < 0 ΔGsys < 0 ΔH -TΔSsys…

Q: find the delta h gor the following reaction lF5(g) ---> lF3(g) + F2(g) giveb the data below IF(g) +…

A:

Q: 14. (Enthalpy and entropy of reaction from AH°; and S°) Given the following reaction 4HCI(g) + O2(g)…

A: Given reaction : 4HCI(g) + O₂(g) → 2Cl₂(g) + 2H₂O(g)

Q: Elemental mercury is a silver liquid at room temperature. Its normal freezing point is -38.9 °C, and…

A: The normal freezing point of mercury is -38.9 C. The given mass of mercury is 50.0 g. The value of…

Q: (Q74) A certain process is nonspontaneous at low temperatures. Given that AHrxn = 222.2 kJ and ASrxn…

A:

Q: From the enthalpies of reaction: H2 (g)   +   F2(g)    ------- >  2 HF (g)          ∆H = -537 kJ…

A: (i) H2 (g)   +   F2(g)  →  2 HF (g)          ∆H = -537 kJ (ii) C(s)  +   2 F2 (g)    →   CF4(g)…

Q: 4. (a) Predict the sign of heat (q) and work (w) for the following exothermic reaction conducted at…

A: Given: 2Na (s) + Cl2(g) → 2 NaCl(s) Constant pressure = 1.0 atm Constant temperature = 298 K The…

Q: The vaporisation of a certain element at 23.0 oC has the following enthalpy and entropy values:…

A:

Q: 5. Given the following equations and AH values, determine the heat of reaction (kJ) at 298 K for the…

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

Q: A system undergoes a transformation for which ASsys 0. The transformation can never be spontaneous.…

A: ∆G=∆H-T∆SFor a process to be spontaneous, ΔG<0 ΔGsys<0 ΔHsys-TΔSsys<0 ΔHsys<TΔSsys So…

Q: B. Given the following equations: Solve for the standard state entropy. 1. NaCl(s) → Na+ (aq) + Cl-…

A: To calculate standard state entropy  of the following reactions :  Now, from table of thermodynamic…

Q: Calculate delta H degrees for the process: Zn(s) + S(s) + 2O2(g) = ZnSO4(s) from the following two…

A: Given:

Q: A crucial reaction for the production of synthetic fuels is the production of H2 by the reaction of…

A:

Q: Calculate AGxn at -90 °C. Express the free energy change to three significant figures and include…

A:

Q: The standard enthalpy of combustion of C6H6() is -3267 kJ/mol and the standard enthalpy of…

A: The standard enthalpy of combustion of liquid benzene (C6H6) is -3267 kJ/mol. The standard enthalpy…

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

A:

Q: A substance has a molar specific heat, cV,m=4.00 J K-1mol-1and a molar mass, M=10.0 g/mol. A 100.0 g…

A: Given : mass of sample 1 and 2 and molar mass of sample and molar specific heat. To find: final…

Q: Calculate the standard heat of formation, AHfº, for FeS2, given the following information: 2FES2) +…

A: We have ∆Hf°rxn as -1370 KJ, we are also having  standard heat of formation of reactants , we have…

Q: From the following data at 25°C: H2(g) + Cl2 2 HCl(g) ΔH = -185 kJ 2 H2(g) + O2(g) 2 H2O(g) ΔH =…

A:

Q: Use the data below to calculate ΔHº for the reaction N2O4(g) + 3CO(g)  ➜  N2O(g) + 3CO2(g) Compound…

A:

Q: Given the standard heats of formation for the following compounds, calculate AH of the reaction at…

A: The enthalpy change of a reaction can be calculated from enthalpies of formation of reactants and…

Q: The following table contains some standard enthalpies of fomation, AH. at 298 K Constants P Part A…

A: Given: Standard enthalpy of formation of C3H8(g) = -103.85 kJ/mol Standard enthalpy of formation of…

Q: Consider the reaction 2Na(s) + 2H2O(1)–2N2OH(aq) + H2(g) for which AH° = -368.6 kJ and AS° = -15.30…

A: 2 Na (s) + 2 H2O (l) ==> 2 NaOH (aq) + H2 (g)

Q: Determine the standard enthalpy of formation for butane, using the following data in kJ/mole:…

A: 1- First multiple by with 4 in second equation.  4C(s, gr) + 4O2(g) -----> 4CO2(g)  ∆H4 = 4 (…

Q: A substance has a molar specific heat, cV,m=4.00 J K-1mol-1and a molar mass, M=10.0 g/mol. A 100.0 g…

A: Given : Intial temperature of sample 1= 250 K.                 Initial temperature of sample 2 = 400…

Q: 2. (a) A sample of 1 mole ammonia at 14 atm and 25 °C in a cylinder fitted with a moveable piston…

A: Since you have posted multiple questions, we will answer only first question for you. If you want…

Q: Hex-1-ene gas, C6H12, burns in oxygen to produce carbon dioxide and water vapour. a. Write an…

A:

Q: Using the data below, the ∆S⁰ is -326.3 J/K in the combustion of hydrogen in the presence of excess…

A:

Q: Hydrogen, a potential future fuel, can be produced from carbon (from coal) and steam by the…

A:

Q: The entropy change for the process H2O(s)⟶H2O(l) is 15.2 J/K and requires that the surroundings…

A: Reaction: H2O(s) ⟶ H2O(l) ∆Ssystem = 15.2 J/K ∆H = 38.6 KJ ∆STotal =? T = 76.3 °C = 76.3 + 273.15 =…

Q: Given the following data: 2C2H2(g) + 5O2(g)  →  4CO2(g) + 2H2O(l)      ΔH= -2600. kJ CO2(g) →…

A: Ans

Q: 11. Consider the combustion reaction of methane as shown in the following 1 point equation: * CH (g)…

A: Reaction- CH4 +2O2<->CO2+2H2O

Q: Calculate the standard free-energy change for the following reaction at 25°C: CH:(g) + 202(g) →…

A: It is given that methane (CH4) undergoes a combustion reaction to produce carbon dioxide (CO2)  and…

Q: 14. (Enthalpy and entropy of reaction from AH°; and S°) Given the following reaction 4HCI(g) + O2(g)…

A:

Q: For CHCl3(g), Cp = 7.05 + 35.60 x 10-³T - 216.9 x 10-7T² cal mole-1 K-1. Assuming this gas to be…

A:

Q: (2) Given: compound DH°, (KJ/mol) H,O,(1) - 187.7 H,O(1) - 285.5 (a) Calculate the standard heat of…

A: Given:

Q: Given the following data:    2C2H6 (g) + 7O2 (g) ------> 4CO2 (g) + 6H2 (g)             ΔH=…

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

Q: Calculate the ΔGºrxn (in kJ) for the following: 2LiOH(s) + CO2(g) → Li2CO3(s) + H2O(g).  Use the…

A: We can calculate the Value of ∆G°rxn for the following reaction ; 2LiOH(s) + CO2(g) → Li2CO3(s) +…

Q: Which of the following sets of conditions must be true for a reaction that is thermodynamically…

A:

Q: Estimate ΔG°rxn for the following reaction at 307 K. CH4(g) + 2 O2(g) → CO2 (g) + H2O (l) ΔH°=…

A: Given ΔH°= -890.4 kJ ΔS°= -242.2 J/K T = 307 K

Q: Calculate AS (for the system) when the state of 4.00 mol monatomic ideal gas molecules, for which…

A: Given :             T1 = 270 C = 300K             T2 = 2270 C = 500K             P1 = 4.0 atm…

Q: A crucial reaction for the production of synthetic fuels is the production of H2 by the reaction of…

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.