Calculate ∆Grxn for the oxidation of magnesium at 25°C

Q: Which one has a higher entropy? Explain briefly. MgC2(aq), NaCl(aq)

A: Entropy is a measure of the randomness of the system. The entropy of a system can be calculated by…

Q: At what temperatures is the following process spontaneous at 1 atm? ΔH° = +20 kJ and ΔS° = - 50 J/K

A: The reaction is always non-spontaneous at all temperatures.

Q: Consider the process of water boiling in a beaker that is open to the atmosphere. Which of the…

A: In the given question, we are boiling water in a beaker and then have to see its thermodynamic…

Q: Define spontaneity of a reaction in terms of ∆G. Determine if a process is spontaneous based on…

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Q: A certain reaction has a positive value of enthalpy change. Which of the following statements is/are…

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Q: Calculate ΔH° for the process Sb(s) + 5 2 Cl2 (g) ⟶ SbCl5 (s) from the following information: Sb(s)…

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Q: Without doing any calculations, determine the sign of AS and ASu for each chemical reaction. In…

A: Entropy is a unit of randomness.More the number of moles,more will be the entropy.Change in entropy…

Q: Use Appendix C in your textbook to answer the following question. Consider the following reaction.…

A: The value of standard Gibbs energy change of reactants and products from appendix C -  COCl2 g =-…

Q: 2. Calculate the temperature in which the following reactions become spontaneous. b) Reaction B: AH…

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Q: Even if ∆G is negative, the reaction may not occur

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Q: The ∆H and ∆S for the decomposition of sulfur tetrabromide to sulfur and liquid bromine is +115 kJ…

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Q: Indicate whether the AG, AH, and AS would be greater than zero, less than zero or equal to zero for…

A: The melting of ice is an Endothermic process i.e. ice absorbs heat and converts into liquid water.…

Q: For the reaction below, which statement best describes what is happening with the sign of ΔG0? CrP…

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Q: For a particular reaction, Δ?∘=−28.4 kJ/mol and Δ?∘=−87.9 J/(mol⋅K). Assuming these values change…

A: Given: ΔHo = -28.4 KJ/mol = -28400 J/mol. And the value of ΔSo = -87.9 J/mol.K.

Q: Calculate ΔSϴ for the reduction of aluminum oxide by hydrogen gas: Al2O3(s) + 3H2(g) → 2Al(s) +…

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Q: For the reaction below, which statement best describes what is happening with the sign of AGO? 2 Cu…

A: In this reaction change in entropy is negative beacuse no of particle decreasing  And ∆H is negative…

Q: Calculate AG at 298 K the partial pressures of NO, and N3O, are 0.40 atm and 1.60 atm, respectively.…

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Q: Calculate the free energy change for this reaction at 25 °C. Determine if the reaction is…

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Q: Predict the sign of ∆Ssys for each of the following processes: (a) Molten gold solidifies.

A: The measurement of randomness or disorder of the system is called as entropy. It is a state function…

Q: For the reaction at 298 K, the values of H and S are 58.03 kJ and 176.6 J/K, respectively. What is…

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Q: Consider the general reaction equation below along with the following thermodynamic data: AH°ran-150…

A: The given data- ∆Hrxn°= -150 kJ/mol ∆Srxn°= -413 J/mol K To determine = The temperature at which…

Q: At what temperatures is the following process spontaneous at 1 atm? ΔH° = +20 kJ og/and ΔS° = - 50…

A: The spontaneous nature of the reaction is determined by calculating the change of free energy of the…

Q: A chemist fills a reaction vessel with 2.62 atm nitrogen (N₂) gas, 3.76 atm hydrogen (H₂) gas, and…

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Q: Describe how matter is redistributed when the following spontaneous processes take place:(a) A solid…

A: Sublimation:- It is the change in form of substance from solid state to gaseous state. Example-…

Q: Determine if this reaction is spontaneous under standard conditions; knowing that the reaction's…

A: Spontanity of reaction is determined in terms of Gibbs energy formula.

Q: Which of the following sets of conditions is true for an exothermic reaction that is spontaneous at…

A: Enthalpy, entropy both of these two factors determine the fate of reaction. The reaction either…

Q: Use data from Appendix 4 (or similar sources for Thermodynamic Data), calculate ΔH°, ΔS°, and ΔG°.…

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Q: Without doing any calculations, determine the sign of AS, for each chemical reaction. a. 2 KCIO,(s)…

A: The sign ΔSsys for any reaction can be directly checked by looking at the number of gaseous…

Q: For the reaction Co(g) + 3H2(g)CH4(g) + H20(g) AH° = -206.1 kJ and AS° = -214.7 J/K The maximum…

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Q: What is the free energy change for the process shown here under the specified conditions? T = 25…

A: We know that ∆G = ∆G° + RTlnQ ..(1) Here, Q = pH2^3*pN2^1/pNH3^2 = (0.250)^3(0.870)/(12.9)^2 =…

Q: A chemist fills a reaction vessel with 7.31 atm hydrogen (H₂) gas, 7.32 atm oxygen (O₂) gas, and…

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Q: Determine whether the following process are spontaneous or non-spontaneous. Write your answers on…

A: Since you have posted a question with multiple subparts, we will solve only first three subparts for…

Q: Which of the following processes is both exothermic (at 1 atm) and spontaneous? A) Sublimation of…

A: The process which is both exothermic and spontaneous is condensation of water at 99.5°C.

Q: Calculate the temperature, in Kelvins, at which the decomposition of calcium carbonate becomes…

A: Given:The reaction is

Q: The AH and AS for the decomposition of sulfur tetrabromide to sulfur and liquid bromine is +115 kJ…

A: The decomposition of sulfur tetrabromide to sulfur and liquid bromine reaction can be written as…

Q: ΔHorxn = 102 kJ and ΔSorxn = 299 J K-1. Determine the minimum temperature (in K) at which the…

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Q: 11) Why can endothermic reactions be spontaneous?

A: Introduction: Endothermic reaction: The reaction which requires heat to form the product is called…

Q: A chemist fills a reaction vessel with 6.82 atm nitrogen monoxide (NO) gas, 5.68 atm chlorine (C1₂)…

A: In this question we will calculate the reaction free energy ∆G for a given chemical reaction. The…

Q: y 20. Which process is most likely nonspontaneous at 25°C and 1 atm? (A) A rock climber repels down…

A: Almost all processes are spontaneous. Spontaneous processes are the process which occurs without the…

Q: For each reaction with ΔH = + 245 kJ/mol and ΔS = + 48 J/molK ,at what temperature at which the…

A: The question is based on the concept chemical thermodynamics.   We have been given entropy &…

Q: estion 30 of 41 <. Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of…

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Q: If a process is exothermic and not spontaneous, then what must not be true? a) AG>0 b) AH0 d) AS<0

A: For exothermic process, ΔH &lt; 0 For non spontaneous process, ΔG &gt; 0

Q: Which of the following is non-spontaneous? A. Rain falls from the sky B. A plant grows into a tree…

A: A cellphone battery is being recharged

Q: Indicate whether each statement is true or false. CO21g2 and Ar(g) have nearly the same molar mass.…

A: The degrees of freedom of rotational and vibrational motion are directly proportional to the number…

Q: For the reaction CO (g) + H,0 «) →C 208) ΔΗ. a) + H. 2(8) · calculate the following reaction's…

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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.