Use Hess’ Law to solve the problem: From the following enthalpy changes, 2 P (s) + 3Cl 2(g) ---> 2PCl 3(l)      ∆H = -640 kJ 2 P (s) + 5Cl 2(g) ---> 2PCl 5(s)      ∆H = -886 kJ Calculate the value of ∆H for the reaction. PCl 3(l) + Cl 2(g) ---> PCl 5(s)      ∆H = _______kJ

Q: Calculate the ΔH for the reaction: 4 NH3 (g) + 5 O2 (g) --> 4 NO (g) + 6 H2O (g) from the following…

A: According to Hess's law, the enthalpy change of a reaction is independent of the number of steps…

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Q: Using the following reactions: H 2 (g) +  F 2 (g) --> 2 HF (g)             ∆H = –537 kJ x   C (s)…

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Q: Calculate ΔHΔH for the reaction 2 Al (s) + 3 Cl2 (g) ⟶⟶ 2 AlCl3 (s) from the following data. 2 Al…

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Q: Calculate the ∆H°rxn for the reaction C(graphite) + 2H2(g) → CH4(g) from the following enthalpy…

A: ∆H°rxn can be calculated from the enthapy change of the given reactions. If the reaction is…

Q: The evaporation enthalpy of benzene C6H6 is 394.0 J / g at the normal boiling point which is 80.10…

A: Given : Enthalpy of vaporisation of benzene = 394.0 J/g Boiling point temperature = 80.10 oC And…

Q: Given :           (1) 2NF3 + 2NO  → N2F4  + 2ONF     ∆H= -82.9 kJ           (2) NO + ½ F2  → ONF…

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Q: Calculate ΔH for the process Hg2 Cl2(s) ⟶ 2Hg(l) + Cl2(g)from the following information:Hg(l) +…

A: Given: First need to reverse the equations, and then do the addition as the question is requiring…

Q: Hydrogen cyanide is a highly poisonous, volatile liquid. Determine the ΔH for the reaction that…

A: Hess's Law of Constant Heat Summation: If a reaction occurs in multiple stages or steps, the total…

Q: What would be the sign of ∆H for the reaction   CH4(g) → CH3(g) + H(g) ?

A: Answer: When reaction is exothermic then sign of ∆H is negative and when reaction is endothermic…

Q: Using the following reactions: NO (g) + 0.5 O 2 (g) --> NO 2 (g)             ∆H = 50 kJ x    N 2O 4…

A: Determine  the enthalpy change of the given reaction.

Q: Calculate ΔHΔH for the reaction B2H6 (g) +  6 Cl2 (g) ⟶⟶ 2 BCl3 (g) + 6 HCl (g) from the following…

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Q: Calculate the ΔH for the reaction: C2H4 (g) + H2 (g) --> C2H6 (g), from the following data:   C2H4…

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Q: A certain hydrocarbon of the molecular formula CxH2x has a standard enthalpy of formation ∆Hf° =…

A: The correct method to calculate the value for x is attached below

Q: Given the data 2 C (s) + O2 (g) à 2 CO (g)    ∆H = −221 kJ CH3OH (g)  à  CO (g) + 2 H2 (g)   ∆H =…

A: The given data : The given reaction is : 2 C (s)+O2(g)→2 CO (g)  ∆H= -221 kJCH3OH (g)→ CO(g) +2 H2…

Q: Calculate ∆H for the reaction 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (g), from the following data.…

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Q: Consider the reactions below: 2A + B → 2C ∆H1 = -115.2 kJ B + D → C ∆H2 = -98.4 kJ 2A → B + 2D…

A: It is given that two reactions have the change in enthalpy(shown below) and the net reaction’s…

Q: Standard molar entropies for CO(g), CO2(g), and O2(g) are 197.9, 214.0, and 205.0 in J/mol K,…

A: Entropy Entropy is the measure of disorder in a reaction. When an amount of energy is added to a…

Q: Consider the following reactions. NiSO3(s) →NiO (s) + SO2 (g)        ∆H= 162.0 kJ   SO2 (g) →…

A: (a) The desired equation to calculate the ΔH is: 8Ni (s) + S8(s) + 12O2 (g) → 8NiSO3 (s)

Q: Given :           (1) 2NF3 + 2NO  → N2F4  + 2ONF     ∆H= -82.9 kJ           (2) NO + ½ F2  → ONF…

A: Calculate the value of ∆H for the reaction:    2NF3 + Cu → N2F4    +  CuF2              ∆H = ?

Q: Calculate the ΔHo for the reaction, 6NO2(g) + 8NH3(g) → 7N2(g) + 12H2O(l).   N2(g) + 2O2(g) →…

A: Mathematically, if a chemical reaction can be expressed as the sum of two or more chemical…

Q: Calculate ΔH for this reaction N2H4 (l) + O2 (g) → N2 (g) + 2H2O (l) given the following data:…

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Q: Calculate the ∆H°rxn for the reaction C(graphite) + 2H2(g) → CH4(g) from the following enthalpy…

A: The enthalpy of overall reaction is the sum of enthalpy changes that occur during the reaction. The…

Q: Use Hess’ Law to solve: Calculate ∆H for the reaction CH 4(g) + NH 3(g)  HCN (g) + 3H 2(g) ,…

A: Data given:  N2 (g) + 3 H2 (g) → 2 NH3 (g), ∆H = – 91.8 kJ ---------- (1) C (s) + 2 H2 (g) → CH4…

Q: Calculate ∆H for the reaction CH4(g) + ½ O2(g) → CO(g) + 2 H2(g) given the following data:…

A: Given: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)     ∆H= -802 kJ CH4(g) + CO2(g) → 2CO(g) + 2H2(g)…

Q: Determine ∆H for the phase change of 1.09 moles of water from solid to liquid at 0.0 °C. (∆S = 22.0…

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Q: Consider the Gibbs free energy change for the conversion of glucose to fructose that occurs during…

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Q: A certain hydrocarbon of the molecular formula CxH2x has a standard enthalpy of formation ∆Hf° =…

A: To solve this problem first we have to write the balanced chemical equation of combustion of…

Q: The combustion of methanol is described by the following equation. 2 CH3OH (l) + 3O2 (g) → 2 CO2 (g)…

A: →The amount of energy releases when 1 mole of substance      formed from it's constituents…