For the following reaction: C3H4(g) + 2 H2(g) → C3H8(g); AG' = -76.7 kJ/mol. Calculate the value of AG at 450 K when the pressures of the gases are:

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

A: Entropy is defined as degree of randomness or disorderliness present in a molecule.If a molecule is…

Q: FezO4(s) + 4H2(g)3Fe(s) + 4H20(g) AH° = 151 kJ and AS° = 169 J/K %3D %3D At standard conditions,…

A: Ans

Q: Consider acetylene  the balanced chemical equation for the combustion of 1 mole of acetylene gas…

A: Given Reaction is - C2H2 + (5/2) O2 ==> 2 CO2 +H2O  Also given that - ∆H = 226.7 kJ/mol = 226700…

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

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Q: Urea (NH,CONH₂), an important nitrogen fertilizer, is produced industrially by the following…

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Q: A gas is allowed to expand from 3.321 L to 5.489 Lagainst an external pressure of 1.024 atm. If at…

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Q: a. N204(g) ® 2 NO2(g) b. NaCI(s) ® Na *(aq) + CI "(aq) c. 2 NH3 ® N2(g) + 3 H2(g) d. CaO(s) + CO2(g)…

A: The degree of distribution of energy between distinct motions associated with molecules present in a…

Q: Suppose 0.562 g of graphiteis place in bomb calorimeter with excess of oxygenat 25.00 °C and 1 atm…

A: Given : Mass of C reacting = 0.562 g Heat capacity of calorimeter = 20.70 KJ/oC Initial temperature…

Q: The following thermochemical equation is for the reaction of tetraphosphorus decaoxide(s) with…

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Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol' K-1. How much heat in cal is…

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Q: The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen(g) to form…

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Q: The oxidation of nitric oxide (NO(g)) to nitrogen dioxide is a key step in the formation of smog:…

A: To calculate the work done during this reaction, we need to consider the pressure-volume work (PΔV)…

Q: The synthesis of solid lead (II) sulfide can be expressed in the equation Pb(s) + S(s) → PbS(s) AH°…

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

Q: Is the AS positive or negative for the following reaction 02(g) + 1/2 02(g) → 03(g) O AS doesn't…

A: We have to predict the sign of change of entropy.

Q: 4. Using the tabulated values, calculate AS for the following reactions (Table on the next page): a.…

A: Answer:Here: ai and bi are the stoichiometric coefficients

Q: if delta h is -720.44 kJ/mol and delta s is -263.58 J/molK,at what temprature in kelvin is the…

A: Given, Chemical Reaction :: P2(g)+3Cl2 (g) -->2PCl3 ∆H° = -720.44 kj/mol ∆S° = -263.58 J/mol.K

Q: When 0.865 g sample of cyclohexane (molar mass = 84.16 g/mol) is burned in a bomb calorimeter, the…

A: The given mass of cyclohexane = 0.865 g Molar mass of cyclohexane = 84.16 g/mol The number of moles…

Q: Consider the reactions 1. C(graphite) + O2(g) --> CO2(g) delta H xrn = -393.5 kJ 2. H2(g) +…

A: Thermodynamics can be defined as the brach of chemistry that deals with heat evolved or absorbed…

Q: Usually in General Chemistry labs, this experiment is done as “Coffee Cup Calorimetry” using…

A: When sodium carbonate is dissolved in water a certain amount of heat is released . This heat…

Q: Calculate AHxn for the reaction: 2H,0(1) → 2H2(g) + O2(g) Use the following information: H,0(g) →…

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Q: For the reaction H₂(g) + Cl₂(g) →→→ 2 HCI(g) AG° -191.0 kJ and AS° = 20.0 J/K at 321 K and 1 atm.…

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Q: Which one of the following processes does NOT involve the transfer of energy via work when the…

A: Here is your answer.......

Q: 5. (. One mole of an ideal gas expands against an external pressure of 1.0 atm from an initial state…

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Q: The balanced equation for the reaction of ethanol and oxygen is the following. 2 C₂H5OH(g) + 6 O₂(g)…

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Q: A certain reaction has Ho = -66.40 kJ and So = 0.00 J/K.

A: To solve these problems we use some basics concept of thermodynamics.

Q: The overall reaction in a commercial heat pack can be repre- sented as 4Fe(s) + 30₂(g) 2Fe₂O3(s) AH…

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Q: Consider the reaction (demonstrated in class) which occurs when a balloon filled with H2(g) and…

A: Solution  The reaction in question is the combustion of hydrogen gas in the presence of oxygen gas…

Q: Given: H2(g) + 1/2 O2 (g) —> H2O (l) Delta H = -285.8 kJ   Combine this equation with equation 1…

A: For combustion reaction , we need The compound ( or element ) and Oxygen as reactants, because…

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.