What is the enthalpy change of the following reaction: WO3 (s) + 3 H2 (g) → W (s) + 3 H20 (g) given that 2 W (s) + 3 02 (g) → 2 WO3 (s) 2 H2 (g) + O2 (g) → 2 H2O (g) AH = -1685.4 kJ AH = -477.84 kJ %3D

Q: The thermochemical equation for the combustion of methanol is CH3OH (g)  +  3/2 O2(g)  →  CO2(g)  +…

A: Here we are required to find the heat produced on burning 5 gm of methanol

Q: 4.78 x 10 kJ E) 1,040 kJ 51.Methanol (CH,OH) burns according to the equation 2CH,OH(I) +…

A: The given reaction is,

Q: The standard enthalpy change for the following reaction is -822 kJ at 298 K.2 Na(s) + Cl2(g)    2…

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Q: 2. Use the following reactions: CIO(g) + O3(g) → CI (g) + 202 (g) AHxn = -29.90 kJ 203(g) → 302…

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

Q: Calculate the ΔH∘rxn for the following reaction         C4H4(g) + 2H2(g) → C4H8(g)…

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Q: Given the following reactions N2 (g) + O2 (g) → 2NO (g) 2NO(g) + O2(g) → 2N (g) the enthalpy of…

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Q: Carbon occurs in two forms, graphite and diamond. The enthalpy of the combustion of graphite is…

A: given,  1) combustion of graphite C (graphite) + O2(g) → CO2(g) ,   ΔH1 = -393.5 KJ     -1 2)…

Q: The balanced thermochemical equation for the combustion of exactly one mole of propane is: C3H8 (g)…

A: 1.5 CO2 (g) + 5 H2O(l)   → 0.5 C3H8 (g) + 2.5 O2 (g) )                  ΔH =+1110 kJ/mol

Q: The standard enthalpy change for the following reaction is -511 kJ at 298 K.Br2(l) + 3 F2(g)--->2…

A: The objective of the question is to find the standard enthalpy change for the reaction 1/2 Br2(l) +…

Q: Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 4 CH3NO2(l) + 3…

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Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

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Q: The thermochemical equation for the combustion of methanol is shown below.   CH3OH() + 3/2 O2(g) →…

A: heat of combustion is defined as the amount of heat released when 1 mole of substance undergo…

Q: During the calculation process, how must the following reaction and its ΔH°rxn be manipulated?…

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Q: The combustion of ammonia is : 4NH3(g)+5O2(g)--> 4NO(g)+6H2O(g)        DeltaH= -905kJ what is the…

A: Given Heat of formation data: NO(g) = 90.4 kJ/ mol H2O(g) = -241 kJ/mol 4NH3(g)+5O2(g)-->…

Q: Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction   2…

A: Hess' law of constant heat summation: The Hess law states that the change of enthalpy in a chemical…

Q: Calcium hydroxide, which reacts with carbon dioxide to form calcium carbonate, was used by the…

A: The given balanced chemical reaction is  Ca(OH)2(aq)  +  CO2(g)  → CaCO3(s) + H2O(g). Given data…

Q: The oxidation of sulphur dioxide to sulphur trioxide is important in the manufacture of sulphuric…

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Q: The thermochemical equation for the combustion of propane is shown below: C3H8(g) +…

A: We have given that                   C3H8(g)  +  5 O2(g)  →  3 CO2(g)  +  4 H2O(liq)       ΔrH° =…

Q: The standard enthalpy change for the following reaction is -467 kJ at 298 K. Na(s) + 1/2 N2(g) + 3/2…

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Q: he enthalpy o

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Q: Determine the enthalpy of reaction for HCI(g) + NANO2(s) → HNO2(1) + NaCI(s) 2NACI(s) + H2O(1) →…

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Q: Calculate ΔH for the following reaction, CaO(s) + CO2(g) → CaCO3(s) given the thermochemical…

A: The given problem relates to Hess's law, which states that the amount of heat evolved or absorbed in…

Q: The standard enthalpy change for the following reaction is -1.20x10³ kJ at 29 2 Be(s) + O₂(g) →→→→2…

A: When divided thermochemical equation by 2 unit  then we also divide the enthalpy change value by two…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Hg(l) + O2(g)2HGO(s) AH° =…

A: the solution is as follows:

Q: The complete combustion of propane, C 3H 8(g), is represented by the equation:  C 3H 8(g) + 5 O 2(g)…

A: when the heat is evolved in a reaction then that reaction is known as exothermic reaction.  The…

Q: P3(g) S(s) + O2(g) → SO2(g) A;H°;(SO2,g) = -297kJ/mol 2 SO3(g) → 2 SO2(g) + O2(g) AH°2 = 198KJ/mol D…

A: We have ∆H value of two reaction and calculate for other equation so we have to do experiment with…

Q: The standard enthalpy changes for the combustion of carbon and carbon monoxide are shown below. C(s)…

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Q: Use the following information to determine the enthalpy for the reaction shown be CHĄ(g) + H2O(g) →…

A: We have to find enthalpy of reaction.

Q: SnCl2 (k) → Sn (k) + Cl2 (g) 2 SnCl2 (k) + 2 Cl2 (g) → 2 SnCl4 (s) +325.1 kJ -372.4 kJ Using the…

A: The enthalpy of a reaction provides us with the amount of energy that is used up (absorbed) or given…

Q: What mass of galena (PbS) is converted to lead (II) oxide if 200 kJ of heat are produced?

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Q: Calculate the standard reaction enthalpy for the reaction (use Hess’s Law). N2H4(l) + H2(g) →…

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Q: The standard enthalpy change for the following reaction is 265 kJ at 298 K. Hg,Cl2(s) →2 Hg(1) +…

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Q: What is the enthalpy change when 47.6 g Al completely react, given the reaction below?   The molar…

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Q: The standard enthalpy change for the following reaction is -135 kJ at 298 K. 1/2 N2(g) + 1/2 H2(g)…

A: Basic Rule If any number is multiplied in the reaction Then that number is also multiplied in the…

Q: LP gas burns according to the exothermic reaction: C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJ…

A: Given:The balanced chemical equation:C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJVolume of water…

Q: The balanced thermochemical equation for the combustion of exactly one mole of propane is: C3H8 (g)…

A: Given equation is C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O(l) ΔH = -2220 kJ/mol  Let this be equation…

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.