When is a reaction never spontaneous?   Keq   ∆H>0, ∆S>0   Keq<1   ∆H<0, ∆S>0

Q: Which of the following samples has the greatest entropy? Assume 1 mole of each. O C,H,OH at 60°C O…

A: Entropy is defined as degree of randomness  or disorderliness present in the molecule. HIGHER the…

Q: 9. 2) Would you expect the entropy of CH,OHm to be greater than, less than, or equal to the entropy…

A: We know that Entropy of system is measured the randomness of system. Given system are (2) C2H5OH…

Q: If a certain process has ΔS univ > 0 at 25°C, the process may be described as   A. Spontaneous.…

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Q: Q4) A cube of ice of mass 100 g is put into a glass of water at just above 0"C, When the ice melts,…

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Q: Which reaction is spontaneous at SATP?   ∆H=62.5 kJ, ∆S=-1.25 J/K   ∆H=-10.1 kJ, ∆S=-49.6 J/K…

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Q: TRUE or FALSE:  1 mole of Br2(g) has more entropy than 1 mole of Br2(liq

A: Entropy is a measure of degree of randomness of a system.

Q: What is the entropy at SATP of a reaction where ∆Hºrxn=-12.5 kJ and Keq=32.1?   -0.150 J/K   -150…

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Q: 10. If the y-axis (E) refers to free energy, what term would be used to describe the overall change…

A: Given : graph of a chemical reaction or chemical process.  To find : Type of process.  Solution : As…

Q: certain substance has an enthalpy of fusion of 4.73 kJ/mol and an entropy of fusion of 21.2 J/mol/K.…

A: We know ∆H=∆S×T ∆H=4730j/mol ∆S=21.2j/mol/k So T=4730÷21.2=223.11k

Q: For each of the pairs of substances listed below, CIRCLE the substance that you expect to have the…

A: Entropy of the substance measure the degree of randomness. Entropy is represent by symbol S. Entropy…

Q: Which one of the following would be expected to have the lowest standard molar entropy, S°, at 25°C?…

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Q: What is the free energy change at 25oC for the reaction below, if the standard entropies of…

A: Gibbs free energy is an energy which is used to do useful work. It is an extensive property which…

Q: W + X--> Y +Z has a Delta H of 312KJ and Delta S of -111 J. When will the reaction be spontaneous? O…

A: The reaction is spontaneous when the value of change in Gibbs energy is negative. ∆G=∆H-T∆S

Q: The normal boiling point of ethanol (C2H5OH) is 78.3 °C and its molar enthalpy of vaporization is…

A: Given: The normal boiling point of ethanol (C2H5OH) = 78.3 °C           Molar enthalpy of…

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: Which reaction below is spontaneous at SATP?   ∆Hº=14.1 kJ and ∆Sº=49.2 J/K   ∆Hº=34.1 kJ and…

A: Conditions at SATP (Standard Atmosphere Temperature and Pressure): Temperature = 25°C = 273.15+25 =…

Q: 1. Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: The answer of the above mentioned question is shown below:

Q: Calculate the free energy change for the reaction shown below at 10 degree Farenheit. 12C5 + 3 Br8…

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Q: At what temperature will there be no free energy if AH0=13.7 kJ and AS°=52.8 J/K? O3850 K 259 K 723…

A: From given data  ∆H°=13.7 kJ = 13700 J ∆S°= 52.8 J/K  ∆G°= 0 Formula used  ∆G°= ∆H°-T∆S°

Q: Which choice orders the molecules in increasing entropy? A. F2 < Ne < CH2C12 B. CH2Cl2 < Ne < F2 C.…

A: We know that,  Molar entropy of F2  = 202.8J/mol.K Molar entropy of Ne  = 146.3 J/mol.K Molar…

Q: At what temperature will the reaction with ASrxn = -92.6 J/K and AHrxn =-61.4 kJ pivot %3D (switch)…

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Q: Can a reaction with a negative(-deltaS) entropy and a positive enthalpy (+deltaH) ever be…

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Q: What is the entropy when 1.40 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

A: Recall the given values moles of CCl2F2 =1.4 molesheat of vaporization of CCl2F2∆Hvap=17.2…

Q: c) Caco, (s, calcite) + 2 Ha (g) > Cada (s) • CO: () + H:0 (1) irst, predict the sign of AS the sign…

A: Given: The chemical reaction is, CaOs+2HClg→CaCl2s+CO2g+H2Ol......(1) The standard molar entropy of…

Q: What is the entropy when 1.35 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: Which substance will have the highest molar entropy at 25oC?   A. C4H10(g)   B. CO2(s)   C.…

A: Solution: We know that, Molar mass of gas is directly proportional to absolute entropy. In above…

Q: The synthesis of the pesticide thionyl chloride (OSCl2) proceeds according to the following…

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Q: What is the entropy when 1.34 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: Which of the following substances is likely to have a larger molar entropy and thus be more…

A: Entropy of any substance is directly proportional to the randomness in the movement of the…

Q: What is the value of the entropy of lithium bromide solid at 25℃? Select one: a. – 384 kJ/mol b.…

A: Entropy denotes the randomness of particles

Q: Given these values, ΔHorxn = +75 kJ; ΔSorxn = +120 J/K; T = 298 K; calculatethe free energy change…

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Q: Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: Comparison of molar entropies for different compounds

Q: Given the following combustion reactions, which will have the most negative molar entropy change?…

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

Q: Arrange these compounds in order of increasing standard molar entropy at 25°C: C3H8(g), C2H4(g),…

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Q: Which expression below could be used to calculate the free energy change for a chemical reaction at…

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Q: Choose the one with the highest entropy O 1 mole of ice at -10°C O 1 mole of liquid water at 50°C O…

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Q: State whether the sign of the entropy change expected for each of the following processes will be…

A: Thermodynamics is the study of flow heat in the system. The entropy is a thermodynamic quantity that…

Q: What is the entropy when 1.26 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: 16  of 48 Which set of values is thermodynamically impossible?   ∆G/kJ ∆H/kJ ∆S/J K-1 Keq a. 0 0 0…

A: Using the relation  ∆G = ∆H - T∆S And ∆G = -RTlnKeq

Q: What is the entropy change when 1.20 moles of CCl₂F₂ condenses at 25.0 °C? [∆H(vap) = 17.2 kJ/mol at…

A: Number of moles = 1.20 moles  Temperature = 25°C  ∆Hvap at 25°C  = 17.2 KJ/mol  ∆S of condensation…

Q: What is the entropy at SATP of a reaction where ∆Hºrxn=-12.5 kJ and Keq=8.95x10-4?   -100. J/K…

A: In chemical thermodynamic Entropy is an important quantity that represents the degree of randomness…

Q: What is the free energy change at 25oC for the reaction below, if the standard entropies of…

A: Answer :- ∆G = -16.995 (kJ)  The free energy change (∆G) for the given reaction = -16.995 kJ.…

Q: Determine whether or not the following reaction is spontaneous. Show all your steps. 4NH3(g) +…

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Q: A. Identify the following processes as spontaneous or not.  1. Cooling of a hot flat iron  2. Drop…

A: Since we only answer up to 3 sub parts, we'll answer the first three. Please resubmit the question…

Q: Determine whether the change in entropy increases or decreases.The number 1 serves as an example.…

A: The measure of degree of randomness present in a substance is called entropy. Basically, entropy is…

Q: Consider the reaction: C6F6(g) &lt;--&gt; 3C2F2(g). Given that ΔH° = 591.1 kJ/mol and ΔG° = 495.4…

A: Given, ΔH° = 591.1 kJ/mol and ΔG° = 495.4 kJ/mol at 25°C

Q: 5. Which of the following gaseous substances possesses the largest molar entropy?    Group of answer…

A: The solution is given below -

Q: Chloroform, CHCl3, is a solvent and has been used as an anesthetic. The heat of vaporization of…

A: First calculate the heat of vaporization for 1.30 mol chloroform at its boiling point.

Q: the highest molar entropy? a. CH2Cl2 (g) b. NH3 (g) c. N2O5 (s) d. N2H4 (l)

A: Entropy is the randomness of molecules in the given system.

Q: What is the molar change in entropy of tetrachlorosilane when it boils at 57.65°C given that AHvap =…

A: Given: Temperature (T) = 57.65°C  Or T = 57.65 + 273.15 K = 330.8 K And ∆Hvap = 28.7 kJ/mol Or ∆Hvap…