1)Which substance has the higher entropy?a) dry ice (solid CO2) at –78 OC or CO2(g) at 0 OCb) liquid water at 25 OC or liquid water at 50 OCc) pure alumina, Al2O3(s), or ruby (ruby is Al2O3 in which some Al3+ ions in the crystalline lattice are replaced with Cr3+ ions)d) one mole of N2(g) at 1 bar pressure or one mole of N2(g) at 10 bar pressure (both at 298 K)

Q: 1. Predict whether the entropy change for each of the following reactions will have a positive value…

A: Entropy is a measure of randomness (or) disorderness, represented by ∆S It is a state function,…

Q: The standard entropy of diamond is 2.4 J/mol × K. Calculate the entropy per carbon atom in diamond…

A: Entropy of the substance describes the state of disorderliness or randomness of the molecules or…

Q: The element mercury, Hg, is a silvery liquid at room temperature.  The normal freeing point of…

A: In this question, we want to determine the ∆S value means entropy change in J/K unit. You can see…

Q: 2. Calculate the equilibrium temperature to determine wi AHxn =-65.0 kJ/mol ASrxn 78.0 J/mol K (A)…

A: This question belongs to Thermodynamics. As per the guidelines I can answer first question only.

Q: What is the entropy when 1.39 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

A:

Q: The entropy (AS) associated with a certain process is -131.7 J/K. Which of the following statements…

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

Q: The reaction of methane with water to form carbon dioxide and hydrogen is non-spontaneous at 298 K.…

A: Concept - When a reaction is spontaneous, the change in standard gibbs free energy become zero. as…

Q: 8. 9. How would the entropy of water vapor change if it were compressed at 150 °C? For each of the…

A: Since the gas(here water vapour) compressed at a constant temperature(150°c), the molecules do not…

Q: Determine if the photosynthesis reaction is spontaneous at 80°C. Chemical Equation: CO2 + H2O →…

A:

Q: Chlorofluorocarbons (CFCS) are no longer used as refrigerants because they catalyze the…

A: Given: Heat of vaporization = 24.8 KJ/mol. And boiling point temperature = 23.8 oC

Q: Determine the standard entropy of N2(g) given the following information: N2(g) + 3H2(g) --> 2 NH3(g)…

A: Entropy is the property of the system which measures the degree of disorder or randomness in the…

Q: For the following chemical reaction, predict the sign of the change in entropy (AS). 6Cl2 (g) +…

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

Q: For each pair of substances listed here, choose the compound predicted to have the higher standard…

A: Entropy is a thermodynamic property which measures the randomness or disorderness of a…

Q: Calculate the entropy change, A Suniverse for the following reaction, at standard condition. CO2 (g)…

A:

Q: Two systems, each composed of two particles represented by circles, have 20 J of total energy. Which…

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

Q: 5. The entropy change of the process H2O (s) H2O () is 22 J/K at 0 °C. Calculate the enthalpy of…

A: H2O(s)↔H2O(l)∆H=22J/KT=0∘C=0+273K=273K∆S=∆HT

Q: Determine the standard entropy of N2(g) given the following information: N2(g) + 3H2(g) = 2NH3(g);…

A:

Q: Calculate the change in entropy that occurs in the system when 45.0 g of acetone (C3HO) freezes at…

A: For this we have to use the formula: △S=△HfusionTWhere;△S= Change in entropy△Hfusion= Std. enthalpy…

Q: 5. Which of the following do you expect to have the largest molar entropy at 25 °C? a) H₂O (liq) b)…

A:

Q: increase in entropy except :

A:

Q: For each of the following pairs, predict which substancepossesses the larger entropy per mole: (a) 1…

A: Entropy is defined as the degree of randomness of a compound.