Determine the sign of entropy change (+∆S or -∆S): a. Evaporation of a liquid b. Water freezes c. Precipitation of a solid from solution

Q: Comparing the formulas or states for each pair of substances, tell which you would expect to have…

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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: Calculate the entropy change for each of the following reactions. In each case, account for the sign…

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Q: Find ΔS for the system, surroundings, and universe when 28.2 g of liquid H2O is evapourated at 100.0…

A: Thermodynamics is a branch of chemistry that deals with the flow of heat energy. There are two…

Q: 2. Calculate the entropy change, AS, for the following reactions and determine if its entropy…

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

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Q: For the reaction, A,H°= -26.9 kJ mol-' and A,S°= 11.3 JK-' mol-1. Wha is A,G° (in kJ mol-1) at 25°C?…

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Q: Look at each process and decide wheather there is greater disorder after the change than before.…

A: Entropy is defined as the degree of randomness. R→P∆S=∑SP - ∑SR Only gases are used in the above…

Q: The melting point of benzene is 5.5 °C. Predict the signs of ΔH, ΔS, and ΔG (in terms of the system…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: A. Explain and identify which of the following processes are accompanied by an increase in entropy…

A: Entropy is the measurement of randomness, higher is the randomness or disorder, higher is the value…

Q: Which of the following has the highest entropy (all at 65.0℃)? a. none - all of these have the same…

A: Entropy is a measurement of degree of randomness. It is an extensive property which depends upon the…

Q: In which set is the substance with a larger positive entropy listed first? a. NaCl(s), NaCl(aq) b.…

A: In this question, we will see which have larger positive entropy in each set.  You can see details…

Q: 4. What is the sign of the entropy change for the following reactions? Explain you a. 2Ca(s) + 02(g)…

A: The objective of the question is to predict the sign of the entropy change for the given reaction.

Q: Calculate ∆ Grxn° values for the following reactions at 298 K using the tabulated ∆ Gf° values. a)…

A: The chemical reactions given are  a) 2 Mg (s) + O2 (g) → 2MgO(s) −1138.6 kJ/mol b) 2 CH3OH (g) + 3…

Q: In which is there a positive entropy change? A. Magnesium combusts in air to form Magnesium oxide B.…

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Q: Predict the sign of the entropy change, AS, for the following processes. Explain the reason for each…

A: Entropy is a thermodynamic quantity, it measures the randomness or disorderness of a molecule or…

Q: GFE&E 3. The decomposition of NaHCO3 used in a kitchen to extinguish fires is: 2NaHCO3 (s)  Na2CO3…

A: The relation between Gibbs free energy and equilibrium constant is as follows,…

Q: Look at each process and decide wheather there is greater disorder after the change than before. If…

A: Entropy means randomness in the system. More the randomness, more is entropy. Less the randomness,…

Q: A. 2H,(g)+ 0, 2H,O(1) The entropy, ASn An = mol O has little or no change. O increases. O decreases.…

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Q: Which has more entropy A. 2NO (g) + 02(g)  b. 2NO2(g)

A: Entropy is a measure of the randomness of the system. The entropy change in a chemical reaction can…

Q: Which of the following processes will have a ΔH value with a negative sign?     A. The boiling…

A: Acid base reaction is exothermic.

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: Find the the ∆H°rxn if ∆G°rxn is 420 kJ/mol and ∆S°rxn is -143 J/mol*k *refer to the photo attaced.

A: Since there are multiple questions, we are authorized to answer only the first one, that is, no. 1.…

Q: What is the entropy change when 0.17 moles of CHCI, vaporizes at 61.0 °C? [AH(vap) = 29.6 kJ/mol at…

A: When a liquid changes into the gas at its boiling point the entropy of the system increases.

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

A: We would use given standard entropy values of species in involved in reaction to calculate entropy…

Q: 2. Calculate AG° from standard enthalpy of formation and standard molar entropy values and predict…

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

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

Q: Increase or decrease in entropy? a. 2NH3 (g)  N2 (g) + 3H2 (g) b. making dry ice from CO2 gas c.…

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Q: An inorganic chemist prepared a new compound in their lab that has a very low boiling point: -45.ºC.…

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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: For each pair of substances pick the one that you expect to have the higher standard molar entropy…

A: According to thermodynamics, entropy is amount of disorder or randomness in a system. More the…

Q: Consider the sublimation of iodine at 25.0 °C : I2(s)----->I2( g)a. Find ΔG°rxn at 25.0 °C.b.…

A: Gibbs energy is the free energy present in the system that is used to do some useful work. it is…

Q: At 25 oC, which of the following substances has the least molar entropy? A. N 2(g) B. C 6H 6(l) C.…

A: Given,        Four substances are given  -                                    A. N2 (g)  B. C6H6 (l)…

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: Which of the following have more entropy? Explain your reasoning! a. A deck of cards in order or a…

A: As the randomness of the system increases, the entropy of the system will increase.

Q: 1. For the reaction C₂H6 (g) → C₂H4 (g) + H₂ (g) AH° is + 137 kJ/mol and AS° is + 120 J/K mol. Which…

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Q: For which of the following reactions is ΔS less than zero? a) MgCO3 (s) --> MgO (s) + CO2 (g) b)…

A: The change in the entropy is less than zero if the number of products is less than the number of…

Q: What is the entropy change when 1.55 moles of CHCl₃ vaporizes at 61.0 °C? [∆H(vap) = 29.6 kJ/mol at…

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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: Consider the reaction: N2O4(g)  2 NO2(g). What is ΔS° at 25 °C?      ΔHf°, kJ mol-1 ΔGf°, kJ…

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Q: In which one of the following processes does the entropy of the system decrease?   A.  Evaporation…

A: Entropy is defined as the disorderness of a thermodynamic system.

Q: Find ΔS for the system, surroundings, and universe when 28.2 g of liquid H2O is evapourated at 100.0…

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Q: substance has the higher entropy?

A: Sample of pure silicon have less entropy becuz it's contains only one constituents while Si+P+B have…