4. Find the standard molar enthalpy for the reaction C(s) + 2 O2(g) CO2(g) CO(g) C(s) + O2(g)→CO2(g) AH, = -394 kJ AH. = +283 kJ %3D CO(g) + ½ O2(g) B. -111 kJ 1) %3D A. 111 kJ C. 677 kJ D.-677 kJ

Q: you combine 50.0 mL H2O, 50.0 mL of 2.2 M HCl(aq), and 4.088 g NaOH(s) (molar mass of NaOH = 40.00…

A: Heat absorbed or released is given by equation q = m c ΔT where, q= heat energy m = mass =104.910 g…

Q: Given the following reactions, estimate the overall enthalpy change for dissolution of solid sodium…

A: The provided reactions are Na(s) + H1/2(g) + O1/2(g) → NaOH This chemical reaction also can be…

Q: The enthalpy change for the reaction C(s, graphite) + 1⁄2O2(g) --> CO(g) cannot be measured directly…

A: The reactions given are, 1) C (s, graphite) + O2 (g) → CO2 (g)…

Q: Calculate the heat of the reaction (AH°rxn) when 35.0 mL of benzene (C6H6, d= 0.880 g/mL, molar mass…

A: Heat of Combustion There are some substance generally organic molecules which reacts with excess…

Q: Based on the reactions: 2NO2 (g) + 2NO (g) + O2 (9) – – > 2N½O4 (g) ; AH, = -228.54 kJ %3D 4NO (g) +…

A:

Q: To a test tube containing 10.0 ml of 0.50 M HCl solution in a calorimeter, 0.05482 g  of solid MgO…

A: Mass of solid MgO = 0.05482 g  MW of MgO = 40.30 g/mol change in temperature =6.2°C heat capacity of…

Q: In Part B of the experiment, a student mixes 28.0 mL of 1.100 M HCl(aq) with 28.0 mL of 1.000 M…

A:

Q: 50.0mL of 0.300M CuSO4 is mixed with equal volume of 0.400M. The reaction temperature raised by…

A: Given,  balanced reaction : 2 NaOH  +  CuSO4 →  Cu(OH)2+  Na2SO4

Q: c) Calculate the standard enthalpy change for the reaction 3C(s) + 4H2 (g) C3H8 (g) Given that C(s)…

A:

Q: Use the following reaction with their enthalpy values: C + O2 -> CO2    H = -231 kJ 2H2 + O2 ->…

A: Given:   i)         C + O2 -> CO2                                    H = -231 kJ ii)       2H2 +…

Q: N2 (g) + O2 (g) 2 NO (g) AH°rxn = +197 kJ %3D NO2 (g) → NO (g) + 1/2 O2 (g) AH°rxn = +89.2 kJ What…

A:

Q: For the reaction 2 sO2(9) + 02(9) 2 S03(g) AG° = -140.1 k) and AS = -187.9 3/K at 307 K and 1 atm.…

A:

Q: The standard enthalpy of reaction, AH' pxn, for the reaction, CaO(s) + SO3(3) – CaSO4(s) is -401.5…

A:

Q: Calculate the change in enthalpy (in kJ/mol) for the following reaction using the data provided.…

A:

Q: 200 cm3 of 1.0M HCL and 200 cm3 of 1.0M NaOH at 33.1oC were mixed in a simple calorimeter. The…

A:

Q: 50.0 mL of a solution of HCl is combined with 100.0 mL of 1.15 M NaOH in a calorimeter. The reaction…

A: Given:Volume of HCl = 50 mLVolume of NaOH = 100 mLMolarity of NaOH = 1.15T = 22. 4 (before…

Q: Calculate the standard enthalpy of formation of NaHCO3(s) given the following information:…

A:

Q: What is the standard enthalpy change for the reaction: 2C5H10(1) + 15O2(g) →10CO2(g) + 10H20(1);…

A: The given data- The enthalpy of formation for : C6H6(l) =-605.0 kJ/mol CO2(g) = -393.5 kJ/mol H2O(l)…

Q: 8. For the reaction: Ca(OH)2(s) + CO2(g) – CaCO3(s) + H2O(1) a. Balance the reaction b. Use the…

A:

Q: Calculate the standard enthalpy change for the fermentation process, in which glucose (C6H12O6) is…

A: The enthalpy for a given reaction is the change in the enthalpy which takes place in a given system…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + H2(g)–C;Hz(g) AH° =…

A: We have to calculate the standard enthalpy change for given reaction.

Q: Calculate the standard reaction enthalpy for the following reaction in KJ*mol. CH4(g) + H2O(g) -->…

A: Hess's law states that enthalpy change of reaction is independent of initial and final states. If…

Q: A constant pressure "coffee-cup" calorimeter is used to measure the heat of reaction between 0.10 L…

A:

Q: Consider the combustion of liquid methanol, CH3OH1l2:CH3OH1l2 + 32O21g2¡ CO21g2 + 2 H2O1l2ΔH =…

A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you…

Q: (1) N2(g) + O2(g)2NO(g)...... ΔH° = 181.8 kJ (2) N2(g) + 2O2(g)N2O4(g)......ΔH° = 9.2 kJ what is…

A: The enthalpy change of the system is a state function. The change in enthalpy does not depends on…

Q: The student transferred 50.0 mL 1.00 M HCl into a coffee-cup calorimeter, which had a temperature of…

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Q: Using the standard enthalpy of formations from the table below, calculate the standard enthalpy…

A:

Q: 50.0 mL of a solution of HCl is combined with 100.0 mL of 1.05M NaOH in a calorimeter. The reaction…

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Q: Reaction of Magnesium with Water Calculate the enthalpy change for the reaction of magnesium and…

A: The two reactions given are  1) MgO (s) + 2 HCl (aq) ---------> MgCl2 (aq) + H2O (l)…

Q: Reaction of Magnesium with Water Calculate the enthalpy change for the reaction of magnesium and…

A:

Q: From the enthalpies of reaction2 C(s) + O2(g)----->2 CO(g) ΔH = -221.0 kJ2 C(s) + O2(g) + 4…

A: Given:

Q: a constant-pressure calorimetry experiment, Hayoung mixed 100.0 mL of 1.00 M H2C2O4 solution and…

A: To calculate the enthalpy of neutralization, heat formula will be used.  Heat = mass of sample ×…

Q: During an experiment where 50.0 mL of a 1.0 M acid solution was mixed with 50.0 mL of a 1.0  M base…

A: Given,  The ∆Hrxn is : when 50.0 mL of a 1.0 M acid solution was mixed with 50.0 mL of a 1.0 M base…

Q: Calculate the heat of neutralization (kJ/mole) for the reaction of 50.0 mL of 0.177 M potassium…

A: The reaction taking place between is, 2KOH+H2SO4 →  K2SO4+2H2O Calculate number of moles of KOH and…

Q: SiO2(s) + 4 HF(aq) → SiF4(g) + 2 H2O(l)        ∆Horxn = 4.60 kJ ∆Hof, kJ/mol: ???         -320.1…

A: Introduction Whenever a particular reaction moves in th forward direction, this means the reaction…

Q: The standard enthalpy change of combustion [to CO2(g) and H2O()] at 25°C of the organic solid…

A: Given: Standard enthalpy change for combustion of phthalic acid = -3209.0 kJ mol-1 Heat of formation…

Q: For the reaction N2(g) + 3H2(g) →2NH3(g) AG° = -29.6 kJ and AS° =-198.7 J/K at 315 K and 1 atm. This…

A:

Q: Calculate the standard enthalpy change for the reaction 2C3H18(1) + 1702(g) 16CO(g) + 18H20(1)…

A:

Q: A calorimeter contains 20.0 mLmL of water at 11.0 ∘C∘C . When 2.10 gg of XX (a substance with a…

A: Volume of water ,= 20 ml  Density of water = 1gm/ml  Mass of water = density x volume = 20 x 1 = 20…

Q: Determine the change in standard enthalpy, in units of kJ mol-1, for the following reaction: C(s,…

A:

Q: A) Given the standard enthalpy changes for the following two reactions: (1) 2C(s) +…

A:

Q: When 25.0 mL of 1.0 M H2SO4 is added to 50.0 mL of 1.0M NaOH at 25 °C in a calorimeter, the…

A: Given that 25.0 mL of 1.0 M of H2SO4 is added with 50 mL of 1.0 M of NaOH solution at 25°C Recall…

Q: The molar enthalpy change for the neutralization reaction: HCl(aq)+NaOH(aq)⟶NaCl(aq)+H2O(l) is ΔrH°…

A:

Q: 2. จงหาค่า AH ของปฏิกิริยานี้ จากข้อมูลที่กำหนดให้ 2C (s) + 2 H,0 (g) → CH, (g) + CO,(g) Determine…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: For the process: 4 Al(s) + 3 O2(g) → 2 Al2O3(s), AH = -3352 kJ. What is the value, in kJ/mol, for…

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Q: Calculate the enthalpy change for the reaction C(s) + 2H2 (g)--->CH4(g) from the following data.…

A: # We have to use all the reaction and manipulate it in such a way that we get the desired equation .…

Q: Find the molar enthalpy of combustion in kJ/mol of glucose at some temperature and pressure C6H12O6…

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Q: The heat evolved from the combustion of 0.94g ethanol raises the temperature of 250 cm3 water…

A: Given volume of water is 250 cm3  and density of water is 1.0 g cm-3 . Specific heat of water is…

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

A:

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.