Use the standard enthalpies of formation to determine AH°n for: rxn Fe,03 (s) + 3 CO (g) → 2 Fe (s) + 3 CO, (g) AH;° (kJ/mol) Fe,03 (s) со (g) -824.2 -110.5 CO2 (g) -393.5 74

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: From first law of thermodynamics ∆U = q+w Here ∆U = change in internal energy q = heat transfer w =…

Q: Carbon monoxide (CO) is a highly poisonous gas. Write the equation that represents the standard…

A: Given: C(graphite) + O2(g) → CO2(g) ΔH° = −394.0 kJ......(i)2 CO(g) + O2(g) → 2 CO2(g) ΔH° = −566.0…

Q: Calculate the enthalpy of the reaction 4B(s) + 302(g)→2B,O3(s) given the following pertinent…

A: Hess's law states that regardless of the multiple steps of the reaction, the total enthalpy change…

Q: 5.2 b Calculate the magnitude of q for a system that does 7.05 × 105 kJ of work on its surroundings…

A: From given data W = -7.05×105 kJ ∆U = -9.55×103 kJ W is negative because work is done by system on…

Q: CO2(g) + 4H2(g) CH4(g) + 2H20(g) Given the following standard enthalpies of formation. CO2(g), AH°,…

A: What is the standard enthalpy of the given reaction---

Q: Using the equations H, (g) + F, (g) → 2 HF (g) AH° = -79.2 kJ/mol C (s) + 2 F, (g) → CF, (g) AH° =…

A:

Q: The white pigment TiO2 is prepared by the reaction of titanium tetrachloride, TiCl4, with water…

A:

Q: Zinc sulphide is converted into zinc oxide by heating in a furnace. ZnS(s) + 1.502(g) → ZnO(s) +…

A: ∆H°reaction = ∆Hproduct - ∆Hreactant

Q: Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction:…

A: The given reaction is deduced by multiplying reversing the first reaction and further multiplying by…

Q: Calculate the standard molar enthalpy of formation of NaHCO3(s) from the enthalpy of the baking soda…

A:

Q: Given the thermochemical equations X, + 3 Y, – 2XY, AH1 = -390 kJ X, + 2Z, → 2XZ, AH2 = -170 kJ 2Y,…

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

Q: Given the standard reaction enthalpies for these two reactions: (1) N2(g) + 20,(g) →N2O4(g) A,H° =…

A: Given  N2(g) +  2O2(g)   →  N2O4(g)                ∆rH°  =  9.2 KJ/mol                 [ Equation 1…

Q: Liquid ethanol (C2H, OH) combusts in the presence of oxygen gas to form carbon dioxide and water.…

A: The standard enthalpy for oxygen gas is zero at standard condition.

Q: Given the thermochemical equations X, +3 Y, → 2XY AH = -330 kJ X, +2Z, → 2XZ, AH = -120 kJ 2Y, +Z, →…

A: Given thermochemical reactions are : X2+3Y2→2XY3                               ∆H1=-330 kJ…

Q: Consider the following reaction. C(s, graphite) + 2H;O(1) → CO2(g) + 2H2(g), AHxn = ? Given the…

A: The amount of heat absorbed or evolved in a reaction carried out at constant pressure is known as…

Q: Using the equations 2 H, (g) + O, (g)→ 2 H,O (1) AH° = -572 kJ/mol Ca (s) + ½ Ô, (g) → CaO (s) AH° =…

A:

Q: Using the equations H, (g) + F, (g) → 2 HF (g) AH° = -79.2 kJ/mol C'(s) + 2 F, (g) → CF, (g) AH° =…

A: Given,   Equation1: H2(g) + F2(g) 2HF(g)                          ∆H = -79.2 KJ/mol Equation2: C(s)…

Q: 4 C3H9N(1) + 21 O2(g) → 12 CO2(g) + 18 H2O(1) + 2 N2(1) AH = -9,191 kJ Use this information and the…

A: Standard enthalpy of formation can be calculated as, ∆Horeaction=∆Hproduct-∆Hreactant

Q: Using the equations N, (g) + O, (g)→ 2 NO (g) AH° = 180.6 kJ/mol N, (g) + 3 H, (g) → 2 NH, (g) AH° =…

A: Given equations and their enthalpies are, 1)N2(g)+O2(g)-->2NO(g), ∆Ho1=180.6 KJ/mol…

Q: The contents of the closed box in each of the following illustrationsrepresent a system, and the…

A: The points should be kept in mind while solving this problem, Heat absorbed by the system is called…

Q: Using the equations H, (g) + F, (g) → 2 HF (g) AH° = -79.2 kJ/mol C (s) + 2 F, (g) → CF, (g) AH° =…

A: Since you have posted multiple questions we will solve the first question for you. To get the…

Q: the standard enthalpy of combustion of ethane gas, C2H6(g), is -1559.7 kJ/mole at 298 K. given the…

A: Given that : The standard enthalpy of combustion of ethane gas, C2H6(g) = -1559.7 kJ/mol The…

Q: Calculate the standard enthalpy for the combustion of liquid octane, based upon the balanced…

A: Calculate the standard enthalpy of combustion of octane ?

Q: The dissolution of calcium chloride in water CaCl2(s) → Ca²+(aq) + 2 Cl¯(aq) is used in first-aid…

A: Given that, Mass of CaCl2 = 20.0 g  Volume of water = 0.100 L  Temperature = 20.0°C To find:…

Q: Using the equations Sro (s) + CO, (g) → SrCO, (s) AH° = -234 kJ/mol 2 Sr(s) + O, (g) → 2 Sro (s) AH°…

A: Given  SrO(s)  +  CO2(g)   →   SrCO3(s)                     ∆H°   = -234 KJ/mol…

Q: 2. The industrial method currently used to produce butanol is the hydration of butene. C,Ha(g) +…

A: Given  4C(s)  +  4 H2(g)   →  C4H8(g)                                           ∆H = -7.1 KJ/mol…

Q: Given the thermochemical equations X, + 3 Y, → 2XY, ΔΗ = -390 kJ - X, + 2Z, – 2 XZ, AH2 = -120 kJ…

A:

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

A:

Q: Hydrobromic acid (HBr) is a commonly used acid for adding bromine to organic compounds. As bromine…

A:

Q: Calculate the standard molar enthalpy for the complete combustion of liquid ethanol (C2H5OH) using…

A:

Q: Using the equations 2 H: (g) + O2 (g) → 2 H2O (1) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

A: The first chemical reaction is, 2H2g+O2g→2H2Ol                 ∆H°=-572 kJ/mol......(1) The second…

Q: The following two reduction reactions for aluminum oxide and iron (III) oxide can be combined to…

A: Answer :-  a) 2Al2O3(s) → 4Al(s) + 3O2(g)   ,  ∆H°rxn = 3352 (kJ)  b) 2Fe2O3(s) → 4Fe(s) + 3O2(g)…

Q: Using the equations 2 Fe (s) + 3 Cl, (g) → 2 FeCl, (s) AH° = -800.0 kJ/mol Si(s) + 2 CI, (g) → SICI,…

A:

Q: Rapid walking through a distance of 2.2 km for 30 minutes per day requires 41 J while swimming for…

A: Since walking consume 41 J per day(for 30 minutes). Energy consumed in one week = 7×41= 287J. Energy…

Q: Using the equations Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol CaO (s) + H2O (1) → Ca(OH)2 (s)…

A: Let Ca (s) + 1/2 O2 (g) → CaO (s)  ΔHo = -635 kJ/mol this be equation 1CaO (s) + H2O (l) → Ca(OH)2…

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: Calculate the standard enthalpies of the following reactions from the standard molar enthalpies of…

A: 1) The chemical reaction is - CaCO3(s) → CaO(s) + CO2(g)  The standard enthalpy of formation values…

Q: Balance the following chemical equation, name the reactants and products, and calculate the enthalpy…

A: The equation is given as,

Q: Using the equations Ca(s) + 1/2 O, (g) → CaO (s) AH° = -450 kJ/mol CO, (g) → C (s) + O, (g) AH° =…

A:

Q: Given the standard enthalpies of formation for the following substances, determine the reaction…

A: The enthalpy change of a chemical reaction can be calculated by the standard heat of the formation…

Q: The reaction of 1.00 mol of solid phosphorus with chlorine gas to form PCl3(g) releases 287.0kJ of…

A: According to the Hess's law, the total change in enthalpy during a course of a chemical reaction…

Q: AHO ン ran Given: + 183 KJ 12 Nz lg)+ O,5) AH°rxn こ +33 KI

A:

Q: Which of the following signs on q and w represent a system that is doing work on the surroundings,…

A: The answer is as follows:

Q: 7. Calculate the standard enthalpy change at 25°C for the reaction CH, (g) + 2 H₂S (g) →→ CS₂ (1) +…

A: The standard enthalpy of reaction is the change in enthalpy of a reaction under standard conditions.…

Q: The standard enthalpy of reaction, AH for the reaction, CaO(s) + SO3(3) – CaSO,(s) is 401.5 kJ mol1.…

A:

Q: Ammonia reacts with oxygen to form nitrogen dioxide and steam. Calculate the enthalpyof the reaction…

A:

Q: Given the thermochemical equations X, + 3 Y, → 2XY; AH| = -370 kJ X, + 2Z, → 2 XZ, AH2 = -180 kJ 2…

A:

Q: Her) is a commonly used acid for adding bromine to organic compounds. As bromine makes for an easily…

A: The enthalpies of the reactions are given . We have to calculate enthalpy for the synthesis of HBr…

Q: (a) The complete combustion of 12g of compound X (molar mass =100 g/mol) in a bomb calorimeter…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts of…

Q: Given the following chemical equations, Ca(s) + ½O¬(«) → CaO(s) AH = -635 K.Jmol CACO,6,) → CaO,) +…

A: Given that , Ca (s) + 1/2 O2 (g) → CaO (s),△H = -635 kJ mol -1  ⇒ (1) CaCO3 (s) → CaO (s) +CO2(g)…

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.