For the process O2(g)      2O(g), ΔH° = 498 kJ·mol –1.  What would be the predicted sign of ΔS°rxn and the conditions under which this reaction would be spontaneous?   a. ΔS°rxn is negative, and the process is spontaneous at high temperatures only.   b. ΔS°rxn is negative, and the process is spontaneous at low temperatures only.   c. ΔS°rxn is positive, and the process is spontaneous at high temperatures only.   d. ΔS°rxn is positive, and the process is spontaneous at low temperatures only.

Q: For a certain chemical reaction, AH" = +9.8 kJ and AS = +30.0 J/K. a) Is the reaction endothermic or…

A: The More the Negative value Of gibbs free energy more spontaneous  will  be reaction.

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

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A: Applying concept of spontaneity and formula ∆S=∆H /T

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Q: 2 ClO2 (g)   +  2 TiCl4 (l)    →     2 TiO2 (s)   +   5 Cl2 (g)         Delta H =  – 343.8 kJ when…

A: Please have a look on the solutiion:

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

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Q: A student calculated that for a given reaction, ∆S = 22J/K and ∆H =6028 Joules. At which temperature…

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Q: Which of these processes is spontaneous?a. the combustion of natural gasb. the extraction of iron…

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Q: For a particular reaction, AH° = -28.4 kJ and AS = -87.9 J/K. Assuming these values change very…

A: Given,  ∆H° = - 24 kJ = - 2400 J  ∆S° = - 87.9 J/K

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Q: 1A. The entropy will usually increase when I. a molecule is broken into two or more smaller…

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for…

Q: For a certain chemical reaction, ΔH°= ‒40.0 kJ and ΔS°= ‒150.0 J/K. (a) Does the reaction lead to an…

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Q: Read the descriptions of physical or chemical changes in the table below. Then decide whether the…

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Q: For a reaction for which ∆H = -142 kJ/mol and ∆S = -178 J/mol･K, which of the following statements…

A: Applying spontaneity criteria for ∆G -ve.

Q: For each reaction, calculate AHan ASn and AGan at 25 "C and state whether or not the reaction is…

A: Standard heat of formation of N2O4 (ΔHfo) = 9.16 KJ/mol. Standard heat of formation of NO2 (ΔHfo) =…

Q: (2)Consider the following reaction at constant pressure. Use the information here to determine the…

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Q: For the reaction 2 NH3 (g) --> N2 (g)+ 3 H2 (g) , ∆H = +92 kJ. Which of the following is true?…

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Q: A certain reaction has ΔH∘ = + 35.8 kJ and ΔS∘ = 85.5 J/K. 1. exothermic or endothermic? 2. Does…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Predict which member of each of the following pairs has the greater standard entropy at 25°C25 °C:…

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Q: Indicate whether the following processes are spontaneous or nonspontaneous.(a) Liquid water freezing…

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Q: Methanol is burned as fuel in some race cars. This makes it clear that the reaction is spontaneous…

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

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

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Q: An exothermic reaction produces two moles of gas from one mole of solid reactant. Will the reaction…

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Q: (a) Is the reaction spontaneous at 25°C? (b) The solid decomposed to NO2 and O2 at 25°C. Is the…

A:

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: For a particular reaction, AH° = 20.1 kJ/mol and AS° = 45.9 J/(mol·K). Assuming these values change…

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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: For a particular reaction, AH° = 67.7 kJ and AS° = 126.9 J/K. Assuming these values change very…

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Q: The standard enthalpy change and standard entropy change for the reaction are: AHP = -1036.0 kJ mol1…

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Q: Predict which member of each of the following pairs has the greater standard entropy at 25 °C25 °C:…

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Q: For a given reaction, ΔH = +31.15 kJ/mol and ΔS = +126.83 J/K · mol. Above what temperature is the…

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Q: Indicate whether each process is spontaneous or nonspontaneous. a. water vapor condensing at 50 °C…

A: Answers are explained below.

Q: Given the following reaction and its enthalpy change, and the sign of the entropy change that you…

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Q: Consider the reaction for the decompositon of carbon tetrachloride gas: CCl4(g) ⟶ C(s, graphite) + 2…

A: For the given reaction,△H = +95.7 kJ = 95700 J    (1 kJ = 1000 J)△S = +142.2 J/KTemperature, T = 25…

Q: 6. For each reaction below, determine the sign of AH and AS. Also state under what conditions the…

A: The spontaneity of any reaction is known with the help of sign of ΔH and ΔS. ΔG=ΔH-T ΔSSpontaneous…

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Q: Calculate the temperature in kelvins above which this reaction is spontaneous.

A: We have to Calculate the temperature in kelvins above which this reaction is spontaneous.

Q: Consider the reaction, O2(g) ⇌ 2 O(g) where ∆H° = 498 kJ/mol at 25°C.  At what temperatures (high or…

A: The given reaction is: O2(g) ⇌ 2 O(g) ∆S˚ is given by: ∆S°=S°products-S°reactants Since there are…

Q: Which of the following is spontaneous at SATP?

A: CaCO3(s)+178 kJ→CaO(s)+CO2(g)  B option is spontaneous reaction at STP.  In the above reaction ∆S is…

Q: Which are spontaneous at all temperatures? Choose one or more: 2H,S(g) + 302(8) –→ 2H,0(g) + SO,(g)…

A: