Consider the combustion of propane gas:  C3H8(g)    +     5O2(g)           ------>           3CO2(g)        +            4H2O(g)            ΔHrxn  =  - 2044 kJ  Determine the sign of the entropy change for the system.

Q: Calculate the entropy change of the universe (J/mol-K) when the entropy change of the system is 75.4…

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Q: The heat of vaporization AH, of methanol (CH;OH) is 35.3 kJ/mol. Calculate th

A: If   vapourisation of methanol       CH3OH(l)     ⇔  CH3OH(g)    △Hv = 35.3 KJ/mol     then…

Q: If energy flows out of a chemical system and into thesurroundings, what is the sign of ∆Esystem?

A: A body of a substance or matter which has specified walls and permeabilities that separates it from…

Q: Consider the reaction: 2HBr(g) + Cl₂ (g) → 2HCI(g) + Br₂(g) Using standard thermodynamic data at 298…

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Q: Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶…

A: For a reaction to be spontaneous ,    should be negative Hence  value of should be greater than ,

Q: Calculate the standard entropy change for the following reaction.   2N2(g) + 6H2(g) → 4NH3(g)…

A: The standard entropy change of any reaction is defined as the difference between the sum of standard…

Q: he sum of the entropy changes of the system and the surroundings (∆SSYS + ∆SSURR) are:

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Q: Calculate the standard entropy change for the formation of one mole methanol at 25 °C.    2 CO2(g)…

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Q: a) For the vaporization of a liquid at its boiling point, A(l) → A(g), is the entropy change of the…

A: The entropy tells the randomness present in the system due to its disorderness created in the system…

Q: According to the second law of thermodynamics, what must be true about entropy changes when dry ice…

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Q: Determine the entropy change for the reaction given Enter your answer in J/K. CO₂(g) + 2NH3(g) →…

A: Entropy of CO2(g) = 213.74 J/molKEntropy of H2O(l) = 69.91 J/molK Entropy of H2O (aq) = 188.83…

Q: Does someone know the standard entropy values in J/K for H2(g), F2(g) and HF(g)?

A: The standard entropy values of hydrogen and fluorine gases are 130.6 J/Kmol and 202.8 J/Kmol…

Q: 8. For which of the following reactions will the entropy of the system decrease? a) CuSO. (s) + H20…

A: Entropy is the measure of randomness or disorderness of the system.  More is the randomness in the…

Q: When exposed to oxygen, iron forms iron oxide., 4Fe(s) + 3O₂(g) → 2Fe₂O₃(s). What, if anything can…

A: 4Fe(s) + 3O₂(g) → 2Fe₂O₃(s) [ entropy will…

Q: Calculate the entropy of the equation below: CaCO3(s) → CO2(g) + Cao (s) CaCO3(s) = 92.9 J/K.mol…

A: The balanced chemical equation is: CaCO3(s)  ---->CaO(s) + CO2(g)

Q: Consider the following reaction under the standard state. 2 NO3 (g) = 2 NO2 (g) + O2 (g) The…

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Q: Given the reaction:  CaCO3(s)  ??  CaO(s)  +  CO2(g), the entropy (ΔS) change for this reaction is…

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Q: Calculate So for O3(g) if the standard entropy change for the reaction (DelaS_rxn) below is 274…

A: Given reaction: 4O3(g) → 6O2(g) The standard entropy change for the reaction = 274 J/K⋅mol So[O2(g)]…

Q: What is the change in entropy (positive, negative, or zero) for the system? H2O (l) --> H2O (s)

A: Entropy is the measure of randomness of the system.

Q: Calculate the standard entropy change for the following reaction. 4 Al(s) + 3 02(g) → 2 Al,O3(s) JK!

A: A numerical problem based on entropy change, which is to be accomplished.

Q: The normal boiling point of ethanol, C2H5OH, is 78.3 °C. Its molar enthalpy of vaporization is 38.56…

A: Molar heat of vaporisation of a substance is defined as the amount of heat absorbed by one mole of…

Q: Predict the sign of the entropy change (positive or negative) for the following process. Na…

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

Q: A reaction has ΔH∘rxn= -139 kJ and ΔS∘rxn=303 J/K .     Part A At what temperature is the change in…

A: GIven: ΔH∘rxn= -139 kJ=-13900 J ΔS∘rxn=303 J/K . Now, ∆Ssurrounding = ∆Hreaction / T

Q: Which reaction results to a decrease in the entropy of the system? O 4 NH3 (g) + 5 02 (2) → 4 NO (g)…

A: The entropy is the measure of degree of randomness in a molecule.

Q: Determine the entropy of * NH₂Cl(s) → NH3(g) + HCl(g) > positive negative

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Q: Determine the entropy change for the combustion of gaseous propane, C3Hg, under the standard…

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Q: Stephanie has 17.7 g of liquid carbon dioxide CO2 which vaporizes at its normal boiling point -78.46…

A: mass of CO2 = 17.7 g normal boiling point -78.46 °C   Molar mass of CO2 = 44.01 g/mol  Enthalpy of…

Q: The heat of vaporization AH, of methanol (CH,OH) is 35.3 kJ/mol. Calculate the change in entropy AS…

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Q: Using the entropy values in the table below, what is the standard change in entropy, AS, for the…

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Q: Consider the reaction: NO(9) _H2(g) → N2(g) +. H2O) for which AS'= -551.7 J/K at 25°C. Using the…

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Q: What is the entropy change of the universe when 5.74 mol of ice melts at temperature is 25.8oC?…

A: Answer: Entropy is the measure of system's disorderliness or randomness. In more possible states…

Q: How many microstates are present in a system with an entropy of zero?

A: The entropy (S) and microstates(W) are related by formula : S = kB ln(W)  Here , kB = Boltzmann…

Q: What is the entropy change, in J mol-1 K-1, when 100.0 g of water boils at 100.0 oC?…

A: ∆Hvap= 40.7 kJ/mol = 40.7 × 1000 J/mol Water boils at 100°C = 373 K For the vapourization of water,…

Q: Suppose that two systems, each composed of two particles repre- sented by circles, have 20 J of…

A: Given data: Two systems, each compound of two particles, represented by the circkes have 20 J of…

Q: Compute for the total entropy change( ΔSuniv) in the oxidation of metallic iron into ferric oxide…

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Q: Suppose that two systems, each composed of two particles rep- resented by circles, have 20 J of…

A: Entropy is a measure of the extent of energy dispersal, and it rises with the number of comparable…

Q: What is the entropy change of a gas in J/K (to 2 decimal points) when one mole of a perfect gas…

A: Given that -  Number of moles of gas = 1  Initial volume of gas = 0.36 m3  Final volume of gas =…

Q: Calculate the entropy change in surroundings when 1.00 mol of H2O (l) is formed under standard…

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Q: The heat of vaporization AH, of propane (C3Hg) is 19.4 kJ/mol. Calculate the change in entropy AS…

A: For vaporization: Change is entropy  = enthalpy of vapourization ÷ Boiling pointChange in entropy =…

Q: If energy flows out of a chemical system and into the surroundings, what is the sign of ΔEsystem?

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Q: For the reaction 2 CO (g) + O2 (g) → 2 CO2 (g), the entropy change is expected to be negative. Is…

A: The given chemical reaction is as follows: 2CO (g) + O2 (g) → 2CO2 (g) The stoichiometry of the…