The value of ΔS° for the catalytic hydrogenation of acetylene to ethene,             C2H2 (g)  +  H2 (g)  →  C2H4 (g) is __________ J/K∙ mol.   Substance S (J/K-mol) C2H2 200.8 H2 130.6 C2H4 219.4   a. -112.0 b. 550.8 c. -18.6 d. 112.0 e. 18.6

Q: What is ∆G° for the reaction CaO(s) + CO₂(g) → CaCO₃(s)

A: Standard Gibbs energy formation (∆fG0) of a compound is the Gibbs energy change accompanying the…

Q: For a given reaction, ΔS = +112 J/mol ⋅ K, and the reaction is spontaneous at temperatures above the…

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Q: For which of the following equations will ΔS be positive? There may be more than one correct…

A: Entropy can be defined as the measure of randomness. Higher the randomness, greater will be the…

Q: The molar entropies of carbon monoxide and carbon dioxide at 25°C are 197.7 and 213.8 J/molK,…

A: The molar entropy in terms of micro-state is given as :

Q: What is S° for B in the reaction 3 A → 2 B if ∆S°(rxn) =-109.3 J/mol ･ K? [S° (A) = (205.0 J/mol…

A: Given the chemical reaction as follows,3A→2Band the ∆S°rxn= =-109.3 Jmol.KS°A =205.0 Jmol.Kwe are…

Q: What is ∆G° for the reaction CaO(s) + CO₂(g) → CaCO₃(s)?

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Q: Which of the following conditions is sufficient alone to predict a reaction to be spontaneous in the…

A: For any reaction to be spontaneous in the forward direction, the change in Gibbs free energy of the…

Q: Which one of the following reactions has ∆S°rxn < 0?   A.  Combustion of glucose, C6H12O6(s)   B.…

A: The entropy change in a chemical reaction is given by the sum of the entropies of the products minus…

Q: Calculate ∆Sº for the reaction below: N2(g)+2O2(g)⇄2NO2(g)  where ∆Sº for N2(g), O2(g), & NO2(g),…

A: The given chemical equation is: N2(g)+2O2(g)⇌2NO2(g) The given standard entropy change (∆Sº) values…

Q: 9.Examine the following reaction: NH4Cl (s)→NH3 (g)+HCl (g) ΔH0=176 kJ At 25 °C, this reaction has…

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Q: Calculate Δ S and Δ Gf° for the combustion of ethane (C2H6). Refer to the values in the picture.

A: The combustion reaction of ethane is as follows: 2C2H6g+7O2g→4CO2g+6H2Ol   The formula of entropy…

Q: 69. Consider the sublimation of iodine at 25.0°C: I₂ (s) → 1₂ (9) a. Find AG at 25.0°C. b. Find…

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Q: Which of the following combinations of ΔH and ΔS values could lead to a spontaneous reaction?…

A: A chemical reaction is said to be spontaneous when the value of ∆G is less than ZERO.…

Q: At constant pressure for which of the reactions shown below should ΔH° be greater than ΔE° ?   I. 2…

A: For a chemical reaction, the relation between change in enthalpy and change in internal energy is…

Q: concerning S and  ΔS

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Q: Consider the reaction: 2 A (s) + 10.4 kJ ------ 2 B (s) + 3 C (g), at what temperature(s) would you…

A: For any reaction to be spontaneous, its Gibbs energy must be negative i.e below 0. Here, the…

Q: The value of ΔS° for the reaction   2C (s, diamond)  +  O2 (g)  →  2CO (g)   is __________ J/K∙…

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Q: The normal melting point of benzene, C6H6, 5.5°C. For the process of melting, what is the sign of…

A: The process of melting consumes energy in the form of heat. The entropy of the system is the…

Q: For a chemical reaction to be spontaneous only at low temperatures, which of the following…

A: For any reaction to be spontaneous, the value of ΔGo i.e DGo of the reaction should be -ve. Hence…

Q: Give the sign of ΔS in the following reactions: a. NH4SO3 (s) ⟶ N2O (g) + 2H2O (l) b. C3H8 (g) + 5O2…

A: Entropy (S) :-  Entropy is a measure of randomness or disorderness of particles present in the…

Q: Which reaction would have an increase in entropy?   a. 2 NH4F (aq) + BaS (aq) → (NH4)2S (aq) +…

A: -&gt; ∆S(gas)&gt;∆S(liquid)&gt;∆S(solid) -&gt;If number of gaseous species in product increases then…

Q: An example of a reaction where ∆G = 0 is H2O(s)→H2O(l) @SATP any reaction that is over…

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Q: Determine ΔS for the reaction 2 Fe2O3(s) &lt;---&gt; 4 Fe(s) + 3 O2(g) given the following…

A: 2 Fe2O3(s) &lt;---&gt; 4 Fe(s) + 3 O2(g)   For any reaction    ΔS = Sproducts - Sreactants   Also…

Q: 10. Iron(III) oxide can be reduced by carbon monoxide. Fe₂O3(s) + 3CO(g) 2Fe(s) + 3CO₂(g)Use the…

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Q: spontaneous

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Q: Calculate ∆S° for the following reaction using the table below. Do not include units with your…

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Q: What is the ΔS° for the reaction? Given are the S°, in J K-1 mol-1, of each substance in…

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Q: 68. Consider the reaction: CaCO3(s) → Cao (s) + CO₂ (g) Estimate AG° for this reaction at each…

A: Standard thermodynamics values of the given substances at 25oC are:

Q: Benzene, Cg H6, has a normal boiling point of 80.1°C and an enthalpy of vaporization, AH, of 30.14…

A: The entropy change accompanying the change in phase from liquid phase to vapor phase is called the…

Q: The value of ΔS° for the catalytic hydrogenation of acetylene to ethane,   C2H2 (g)  +  2H2 (g)  →…

A: Since, Entropy is a thermodynamic quantity. It measure the randomness. If randomness is more then…

Q: One mole of CH4 gas was compressed from 35.604 L to 16.846 L. What was the ΔS of the process? a)…

A: Explained as follows

Q: Consider the evaporation of methanol at 25.0 °C : CH3OH(l )-----&gt;CH3OH( g)a. Find ΔG°r at 25.0…

A: a. The ∆Gr° of a reaction can be calculated by first finding the ∆G° values of individual species of…

Q: Which one of the following reactions will have a positive ∆S? A. CO2 (g) → CO2 (s) B. 2 Hg (l) + O2…

A: We know that Entropy is directly proportional to randomness and we also know that randomness is…

Q: If ΔG0 = −106 kJ/mol for this reaction at 298K, what is the Keq at this temperature? Recall: R =…

A: The relation between ∆G° and equilibrium constant,Keq,is given by the equation :…

Q: Which of the following reactions would be expected to have a negative entropy change, ΔrSo  > 0?…

A: Entropy is a thermodynamic state function that describes the degree of randomness or chaos. It is…