Use the following data to calculate ΔHf for hexane, C6H14(ℓ). Include negative sign if appropriate.               C6H14(ℓ) +19/2 O2(g) → 6CO2(g) + 7H2O(ℓ)    ΔHrxn = -4198.4 kJ                   ΔHf  of CO2(g) = -393.5 kJ/mol          ΔHf  of H2O(ℓ) = -285.8 kJ/mol

Q: An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. AH°F…

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Q: The standard enthalpy change for the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

Q: Calculate the standard enthalpy change for the reaction 2C8H18(l) + 21O2(g) → 8CO(g) + 8CO2(g) +…

A: To find :  2C8H18(l)+21O2(g)→8CO(g)+8CO2(g)+18H2O(l)…

Q: Calculate ΔHrxn for the following reaction: BaO(s)+CO2(g)→BaCO3(s) Use the following reactions and…

A: Heat of reaction is defined as difference of energy of product  and energy of Reactant. If heat of…

Q: Find the ΔH (in kJ) for the reaction: PCl3(l)  +  Cl2(g)  →  PCl5(s)   Given: 2 P (s)  +  3…

A: According to hess’s law :- When reactants are converted to products the chage in enthalpy is same…

Q: Calculate the ΔH for the reaction: CS2 (l) + 2 O2(g) CO2 (g) + 2 SO2 (g) Given: ΔHfCO2 (g) = - 393.5…

A: Given data contains, ΔHfCO2 (g) = - 393.5 kJ/mol; ΔHfSO2 g= -296.8 kJ/mol; ΔHfCS2 (l) = 87.9kJ/mol…

Q: You are given the following data: H2 (g) → 2H (g) ΔH°                      = 436.4 kJ/mol Br2 (g)…

A: 1) Reaction: H(g) + Br(g) → HBr(g) 2) Breaking of H-H bond and Br-Br bond. Then put H-Br together.…

Q: Given the following reactions and corresponding ΔH values, find the ΔH (to the nearest whole #) for…

A: The reactions given are 1) H2S (g) + 2 O2 (g) → H2SO4 (l)                                   ΔH =…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(g) →→C4H10(g)…

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Q: Determine the amount of heat (in kJ) associated with the production of 5.91 x 10 g of ammonia…

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Q: The standard enthalpy change for the following reaction is -851 kJ at 298 K. 2 Na(s) + O2(g) +…

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Q: Write an expression for the difference in internal energy between State A and State B in terms of…

A: The question is related to general chemistry where addition and subtraction of energy needs to be…

Q: Calculate the enthalpy of oxidation of two moles of carbon monoxide two make two moles of carbon…

A: Step 1: Regardless of the number of steps required to achieve the reaction, the change in enthalpy…

Q: Calculate ΔHrxn for the following reaction: CH4(g)+4Cl2(g)→CCl4(g)+4HCl(g)   given these…

A: Some Basic Rule  1) If Reaction is reverse then sign of  ∆H value changes. 2) If any number is…

Q: Calculate ΔH for the following reaction, CaO(s) + CO2(g) → CaCO3(s) given the thermochemical…

A: The given problem relates to Hess's law, which states that the amount of heat evolved or absorbed in…

Q: The standard enthalpy change for the following reaction is 433 kJ at 298 K. KClO4(s)---->  K(s) +…

A: For the given reaction, the standard enthalpy change is 433 kJ at 298 K is : KClO4 (s) → K (s) + 1/2…

Q: Calculate ΔH for the following reaction: 4 Cu(s) + 2 NO2 (g) → 4 CuO(s) + N2(g) Given the following…

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Q: Given : (a)                BCl3(g) + 3H2O(l) →H3BO3(s) + 3HCl(g)       ΔH = -112.5 kJ (b)…

A: Calculate the value of ΔH for the reaction: B2H6(g) + 6Cl2(g) →2BCl3(g) + 6HCl(g)       ΔH = ?

Q: What is the ΔH for the reaction below?    C2H2(g)  + 3 H2O(l) →  CH4(g) +  O2(g) +  CH3OH(l)…

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Q: N2(g) + O2(g) + Cl2(g) ---------> 2 NOCl(g)        ΔH° = 103  kJ What is the standard enthalpy…

A: The answer to the following question is- Given  The reaction : Equation 1) N2(g) + O2(g) + Cl2(g)…

Q: What is the standard enthalpy change for the reaction?  2NH3(g)N2H4(l) + H2(g) N2H4(l) + O2(g)N2(g)…

A: If A + B→C + D                ΔH =   ΔH2 then C + D → A + B        ΔH = - ΔH1 and for  2 ( A + B → C…

Q: Chloroform, CHCl3, is formed from methane and chlorine in the following reaction. CH4(g) + 3 Cl2(g)…

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Q: C3H6(g) + O2(g) → 3CO2(g) + 3H2O (I) ΔΗ° = -2091.3 kJ/mol (K/T/C/A) /3

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Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(g)- →C4H10(g)…

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Q: Find ΔH for CO2 (g) + H2 (g) → CO (g) + H2O (g) given C3H8 (g) + 3 H2O (g) → 3 CO (g) + 7…

A: We have given that C3H8(g) + 3 H2O(g) → 3 CO (g) + 7 H2(g)           ΔH = 499 kJ C3H8 (g) + 6 H2O…

Q: 20) Given the following thermochemical equations, 4NH3(g) + 7O2(g) → 4NO2(g) + 6H2O(g)…

A: To solve this problem we will use the given thermochemical equations .

Q: Find the ΔH for the reaction below, given the following reactions and subsequent ΔH values: C3H8(g)…

A: Using Hess's law,  Enthalpy of reaction remains constant whether it completes in single step or more…

Q: Consider the reaction: 8 H2O (l) + 4CO2 (g)→4  CH3OH (l) + 6 O2 (g) ΔH = +2905.6 kJ What is ΔH for…

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Q: Given the following combustion reaction and its molar enthalpy of reaction: 2NO(g) + O2(g) 2NO2(g)…

A: Given reaction: 2NO(g) + O2(g) → NO2(g)             ΔHo = -112 KJ