What is the enthalpy of formation of CHg(g) in Reaction 4?

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: Calculate the heat of reaction for 40.0 mL of 0.400 M HCl with 40.0 mL of 0.100 M Ba(OH)2 with a…

A: VHCl= 40ml = 0.040 L MHCl= 0.400 M VBa(OH)2= 40ml = 0.040 L MBa(OH)2= 0.400 M Lets assume the…

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: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 305 kJ of…

A: Given reaction is CH4 + 2O2 —> 2H2O + CO2      ΔH = -890 kJ/mol 2 mol H2O produced releases 890…

Q: ne enthalpy change

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Q: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

A: To a test tube containing 5.0 ml of 1.00 M NaOH at 27°C in a calorimeter, 5.0 ml of 2.00 M HNO3 at…

Q: Is heating of CaCO3 to form CaO and CO2 and exothermic or endothermic

A: The question is based on the concept of chemical thermodynamics. heat is released during exothermic…

Q: Use reactions A and B to determine the change in enthalpy (kJ) for reaction C. Do not type units…

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Q: Describe the difference in a potential energy diagram for an exothermic and endothermic reaction.…

A: Ans Exothermic reaction : Reaction in which energy released from system to surrounding is called…

Q: Consider the potential energy diagram below: Energy (kJ) 700 450 350 -100 kJ 350 kJ What is the…

A: In the given question, we have to calculate change in enthalpy.

Q: How much energy is absorbed during the complete reaction of 3.00 kg carbon (MW = 12.01 g/mol) given…

A: Mole=Weight of substance/Molar mass of substance

Q: In a coffee cup calorimeter, 50.0 ml of 0.300 M NaOH solution was added to neutralize 50.0 mL of…

A: Moles is obtained from molarity and volume -  Moles of NaOH = Molarity ×Volume =0.30 M×50 mL=0.30…

Q: Write the equation for the complete combustion of C4H9OH and find the ratio of the number of moles…

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Q: 6. The enthalpy change for the following reaction, as written is -906 kJ. 4NH3(g) +502(g) → 4NO(g) +…

A: To calculate the molar enthalpy change of the reaction for each of the species involved, we need to…

Q: What are calorific value losses and how do they affect your combustion process?

A: Following is the calorific value losses and it affects the combustion process as follows.

Q: How much heat is absorbed during production of 102 g of NO by the combination of nitrogen and…

A: Molar mass NO = 30.01 g/mol

Q: Aspirin can be synthesized in the lab by combining salicylic acid (C,H,O,) and acetic anhydride…

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Q: How much energy is released when 7.00 mol iron is reacted with an excess oxygen?   4 Fe+ 3 O2 → 2…

A: Given reaction is : 4 Fe+ 3 O2 → 2 Fe2O3    ...ΔH = -1652 kJ To calculate:  Energy released = ?…

Q: Determine the value of A¡H for the following reaction: 1 MnO(s) + 02(g) → MnO2(s) 2

A: Concept: Heat of reaction: The standard enthalpy of reaction or heat of reaction for a chemical…

Q: Determine the value of A¡H for the following reaction: 1 MnO2 (s) → MnO(s) + O2 (g) 2

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Q: Calculate the heat energy (ΔHreaction) produced when 1 mole of ethanol burns to produce CO2 and H2O…

A: Calculate the sum of enthalpies of products. ∆Hproduct  =  2∆HCO2  +  3∆HH2O=  2 × (-393.5) KJ/mol…

Q: Write a standard enthalpy of formation reaction for calcium carbonate.  Be sure to include the…

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Q: How much heat (in kilocalories) is evolved or absorbed in the reaction of 1.21 g of Na with H2O?…

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Q: TRUE/FALSE: the following reaction is a formation reaction: 2C(s) + 4H2(g) → 2CH4(g)

A: Formation reaction: A formation reaction is the formation of one mole of a substance from its…

Q: When 13.99mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given : Concentration of NaOH = 3.172 M Volume of NaOH solution = 15.00 mL = 0.0150 L…

Q: How much heat is released when 15.9 g of Al react with excess Fe2O3. Show the conversions required…

A: Answer:Al is more reactive metal than Fe, so when Al and Fe2 are made to react, Al reduces Fe2O3…

Q: (a) The atomic weight of carbon is 12, hydrogen is 1 and oxygen is 16, and the formula for the…

A: The balanced chemical reaction is as follows; CH4  +  2O2 --------------> CO2  +  2H2O  +…

Q: 6. Enthalpies of Formation: A common experiment in industrial chemistry application is when Ethanol…

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Q: (b) The following eaction is a1 important process for yuthenis of benzoin: 2 CHO Find out the non…

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Q: Calculate the enthalpy change

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Q: Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for…

A: Chemical reactions can be added, subtracted, or multiplied like an algebraic equation.

Q: Explain why each of the following chemical equations is not a correct formation reaction: (a) 4…

A: a.

Q: 2Al2O3 yields 4Al +3O2 delta H = 3351.5 kJ  what is the delta H for the formation of 10.2 g of Al2…

A: Enthalpy of reaction is equal to the difference in enthalpy of product and reactants.…

Q: Use the following information to answer question 5. Kerosene, C12H26(1), is a hydrocarbon used in…

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Q: how much heat be given off when 18.5g of c2h4 is burned in oxygen to form CO2g

A: Given mass of C2H4 = 18.5 g  How much heat be given off when 18.5 g of C2H4 is burned in oxygen to…

Q: 33.9 Given the following two reactions and their enthalpy changes,             2 ClO2 (g)   -->…

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

Q: In the reaction below, how much heat is required for the creation of 38.2 g HBr? H2 + Br2 → 2 HBr ΔH…

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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.