The following reaction occurs in the process of extracting zinc metai. 2ZnS(9) + 302(g) → ZnO(s) + 2SO249)- The enthalpies of formation of ZnSisi, ZnOis) and SO2ta) are: - 206, 348.3 and 296.8 KJmol' respectively. Calculate the enthalpy change for the formation of 50g of ZnO from ZnS

Q: The enthalpy of formation of XeF2(g) is -108 kJ/mol and the bond dissociation enthalpy of the F-F…

A: We have to calculate the average bond dissociation enthalpy of Xe-F bond

Q: 5) C-O and O-H bonds are stronger than C-C and C-H bonds, because C-O bonds and O-H bonds S1eolar.…

A: Answer: Chemical reaction is a process in which old bonds get broken and formation of new bonds take…

Q: Given the following data, calculate:  a) Volume of standard HCl used, (mL) b) Moles of H+ used,…

A: Calculation for Run 1 : a) volume of standard HCL used =(Final burette reading - initial burette…

Q: Determine the enthalpy of the reaction given below using enthalpies of formation. H3PO4 (aq) + 3…

A: For a chemical reaction, the enthalpy of reaction (ΔHrxn) is the difference in enthalpy between…

Q: We can use Hess's Law (and some creativity!) to learn about the energetics of reactions that occur…

A:

Q: The equation for the reaction of nitrogen and hydrogen to form ammonia is shown below. N,(g) + 3H,…

A: Given N2 +3H2 →2NH3 △H = - 97 KJ/mole The enthalpy of H-H and N≡N are 436 and 941

Q: a.) Image 1 b.) Image 2

A: a.) First, the balanced equation for combustion of CH3OH is as follows, The ∆G0 value is first…

Q: Consider these reactions: Reaction 1: H2(g)+Cl2(g)⟶2HCl(g)ΔH=−184.6 kJ  Reaction 2:…

A: Consider the givenreactions: Reaction 1: H2(g)+ Cl2(g)⟶2HCl(g)    ΔH=−184.6 kJ  Reaction 2:…

Q: 6. Calculate enthalpy change of the reaction using enthalpy of formation values. Hint: Used Balanced…

A: Given -> ∆H°f(C3H8) = -103.8 KJ/mole  ∆H°f(CO2) = -393.5 KJ/mole  ∆H°f(H2O) = -285.8 KJ/mole

Q: Determine the enthalpy change for the reaction 2

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Q: Use the bond energies provided to estimate the mass of O₂(g) required to produce 1,023 kJ of energy.…

A: Amount of O2 required to produce 1023 kJ of energy is to be calculated.

Q: Using the following bond energies (in kJ/mol):             BE(NºN) = 946;           BE(Cl─Cl) = 243;…

A:

Q: 4. a) With a flow chart, summarize the steps you would use to calculate the enthalpy change of a…

A:

Q: __P4(s) + __Cl2(g) ® __PCl5(g) ΔH°rxn = –1500 kJ          The reaction is _____thermic, heat flows…

A: Balanced Reaction is, P4(s) + 10Cl2 (g)  ----> 4PCl5(g)   ΔH°rxn = –1500 kJ          The reaction…

Q: 5) Which one of the following statements is true? The enthalpy change for a for a reaction is…

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Q: For the reaction below: CH4 ⚫OH ⚫CH3 + H-OH a. Estimate the gas phase enthalpy change using bond…

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Q: 8. The equation below represents the burning of carbon disulfide, CS20) in a calorimeter. CS20) +…

A:

Q: A student performed the procedure described in the lab manual using 49.9 mL of 1.0 M HCI and 49.3 mL…

A: Molarity of HCl = 1.0 MVolume of HCl: 49.9 mLMolarity of NaOH = 1.0 MVolume of NaOH = 49.3 mLInitial…

Q: 3. Methanol is finding increased acceptance as an alternative fuel. The combustion is given by the…

A: The given reaction is CH3OH (s) + O2 (g) → CO2 (g) + H2O (g) ∆Hf0 CH3OH = -238.6 kJ/mol∆Hf0 CO2 (g)…

Q: *Using average bond enthalpies Clinked above) estimate the enthalpy Change for the following…

A:

Q: Consider these reactions: Reaction 1: H2(g)+Cl2(g)⟶2HCl(g)ΔH=−184.6 kJ  Reaction 2:…

A:

Q: What is the purpose of the n or x in the equation when performing enthalpy calculations?

A: Solutions- Enthalpy calculations

Q: What is the enthalpy change for the reaction below? Show calculation. I2 + H2 → 2 HI

A:

Q: Which of the following is a correct formation reaction? Mark all that apply. a. co(g) +02(9) →…

A: Formation reaction :-  The chemical equation which represents the formation of one mole of a…

Q: 3. Which reaction would have the most positive AS°? (A) CO(8) + 2H2(g) → CH3OH(1) (B) 2CH3OH(g) +…

A: Interpretation: Which reaction would have the most positive ∆S°, is to be determined. Given…

Q: 5) Discuss the sources of error in your experiment. 6) List three practical applications of MgO and…

A: 1,2,3 and 4 is correct. 5. Sources of error  a. At the time of measuring weight , fault in digital…

Q: 26. From the relevant bond energies given below, find the approximate AH° ( in kilojoules) for the…

A: The given chemical equation is: CH4(g) + 3Cl2(g)   ----> CHCl3(g) + 3HCl(g)  When bond energy…

Q: Ammonia reacts with oxygen to form nitrogen dioxide and steam, as follows: 4 NH3 (g) + 7 O2 (g) → 4…

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Q: [Reforences) Sulfur (2.67 g) was burned in a constant volume calorimeter with excess O2(g). The…

A: The amount of heat transferred in a system is calculated as follows,…

Q: Use average bond energies to estimate the energy released when 25.0g CH4 undergoes complete…

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Q: Which of the following is the formation reaction for N2O (g)? Group of answer choices

A: Which of the following is the formation reaction for NO2 (g) ?

Q: Using the table of standard formation enthalpies that youl find under the ALEKS Data tab, calculate…

A: Given reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) We have to calculate the reaction enthalpy…

Q: a. Calculate the enthalpy of reaction for: 2 CO(g) + O2(g) → 2 CO2(g) b. If 18.5 grams of carbon…

A:

Q: We can use Hess's Law (and some creativity!) to learn about the energetics of reactions that occur…

A:

Q: QUESTION 6 Use bond enthalpies to estimate AHrxn for the combustion of methane, CH4, the major…

A: Bond enthalpies can be used to estimate the heat of a reaction ΔH(reaction) = (sum of the bond…

Q: When 1.42 g of iron reacts with 1.80 g of chlorine, 3.22 g of iron(II) chloride (FeCl2, molar mass =…

A: Iron reacts with chlorine to form iron(II) chloride. When 3.22 g of  is formed, 6.8 kJ of heat is…

Q: e enthalpy change (AH)

A:

Q: (B) Balance this reaction. Then use the bond enthapies given in the table below to calculate the…

A: The fixed value/amount involved with each chemical bond is considered as "Bond energy". This energy…

Q: Use average bond enthalpy (D) values available under the Thermochemistry heading on ACORN to…

A: The objective of the question is to calculate the enthalpy change (ΔrH) for the given chemical…

Q: Reaction 1: H2(g)+Cl2(g)⟶2HCl(g)ΔH=−184.6 kJ  Reaction 2: 2OF2(g)⟶O2(g)+2 F2(g)ΔH=−49.4 kJ…

A: Given , Reaction : 2OF2(g) →O2(g) +2F2(g)    ∆H=-49.4 kJ

Q: Is the heat of Mg combustion equal to the heat of formation of MgO when both are measured at…

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Q: Draw Lewis structures for ozone and for dioxygen. Using the data given below, qualitatively compare…

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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.