Given: H2O(l) → H2O(g) ΔH° = 40.7 kJ at 373K What is the entropy change in the system (ΔS) when one mole of water vaporizes at 100°C and a pressure of one atmosphere?

Q: Which one has a higher entropy? Explain briefly. MgC2(aq), NaCl(aq)

A: Entropy is a measure of the randomness of the system. The entropy of a system can be calculated by…

Q: Which of the following samples of substances is likely to have the largest entropy? 1 mol KCI(aq) 1…

A: The gas phase has highest entropy followed by liquid. Solids have lowest entropy.

Q: Calculate the entropy change for the freezing of 112 g of ethanol, C2H5OH, at its freezing point of…

A: The entropy of a liquid is higher than the solid, hence during the freezing, the entropy of the…

Q: If the helium was open to the atmosphere and you heated it from 25°C to 100°C, would the change in…

A: the change in entropy will be larger  than heating it in a sealed box.

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

A: The system which has greater entropy has to be given and the reason has to be explained.

Q: Calculate the entropy change, AS° for the following processes, a. vaporization of ethyl alcohol,…

A: Entropy is a measure of disorder or randomness of a substance. Change in entropy is defined as the…

Q: Of the following, which system shows a decrease in entropy? A CHJOH (ACH3OH (g) B. NaCI (s- Na (ag)…

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Q: Which of the following statements regarding the Law of Thermodynamics is false? The entropy of the…

A: Thermodynamics studies the relation between heat, work, temperature, and energy. The laws of…

Q: Calculate the change in entropy that occurs in the system when 45.0 g of acetone (C3H6O) freezes at…

A: The given mass of acetone = 45.0 g The molar mass of acetone = 58.08 g/mol The moles of acetone are…

Q: Calculate the entropy change, AS° for the following processes, a. vaporization of ethyl alcohol,…

A: When a liquid compound is converted into gaseous compound, such process is known as evaporation…

Q: Determine the entropy difference between solid and liquid states for a substance melting at 100 °C…

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Q: What is the entropy change when 307 J of energy is reversibly transferred to a sample of water at…

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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: The enthalpy change when liquid methanol, CH3OH, vaporizes at 25°C is 38.0 kJ/mol. What is the…

A: Since the condensation process is happening at constant temperature Hence the entropy change can be…

Q: Calculate the change in entropy that occurs in the system when 45.8 g of diethyl ether (C4H10O)…

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Q: Consider the reaction2HBr(g) + Cl2(g)2HCl(g) + Br2(g)for which H° = -81.10 kJ and S° = -1.200 J/K at…

A: All feasible reactions occurring in nature are either enthalpy/entropy driven or both. When heat…

Q: 5.sl9 ähäi Predict which of the following substances has the highest entropy value at 25°C Mg0 (s) O…

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

A: We have:   Thus, the amount of energy required to boil 1.44 moles of CHCl3 is:

Q: The enthalpy of vaporization of methanol (CH3OH) is 35.3 kJ/mol at the boiling point of 64.2 °C.…

A: The vaporization can be defined as phase transition from liquid phase to vapor phase.

Q: What is the entropy change when 315 J of energy is reversibly transferred to a sample of water at…

A: Entropy change of a system for reversible process is given by  where ΔS = entropy change  Q = heat…

Q: Is the formation of ozone (O,(g)) from oxygen (O2(g)) spontaneous at room temperature under standard…

A: Spontaneity of a reaction is decided by the sign of ∆G° of reaction.

Q: What is the increase in entropy of 1.00 kg of ice originally at 0 oC that is melted to form water a…

A: Change in entropy is given by: ∆S=∆qT∆S=m×LfT

Q: You are working in a lab and observing a reaction. If a reaction vessel is cold to touch and the…

A: A question about thermodynamics, which is to be accomplished.

Q: Which of the following would be expected to have positive entropy change?   Cooling of nitrogen…

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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: The heat of vaporization of carbon disulfide, CS2, at 25℃ is 27.2 kJ/mol. What is the entropy change…

A: For a phase change, entropy change is given by,

Q: Calculate the standard entropy change for the following reactions: Given S[So2(g)]=248.2j/k.mol,…

A: Given reaction and information,       Formation of SO3 from SO2 and O2.       Entropy value for SO2…

Q: For the following reaction: SO2 (g)_± ½ O2(g)→ SO3(g) For this reaction to be spontaneous, what must…

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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: Predict which member of each of the following pairs has the greater standard entropy at 25°C25 °C:…

A: Since you have asked multiple question ,we will solve the first three question for you. To get the…

Q: Which of the following processes results in the largest decrease in Entropy? The heat of fusion of…

A: Entropy an be defined as the thermal energy per unit temperature that is unavailable for doing a…

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: In which of the following processes does the entropy of the system decrease? Select one: H2(g) +…

A: > In a chemical reaction if gaseous moles increases than entropy increase. > for gases if…

Q: (Q66). What is the change in entropy (in J/K) when 16.9 g of liquid hexane boils at its normal…

A: we need to calculate the change in entropy for hexane

Q: Consider the reaction2HBr(g) + Cl2(g)= 2HCl(g) + Br2(g)for which H° = -81.10 kJ and S° = -1.200 J/K…

A: 1) since  S° = -1.200 J/K for the reaction of 2 moles of HBr  Hence for the reaction of 1 mole of…

Q: The standard enthalpy change and standard entropy change for the reaction are AH =-660 2 kJ mol"'…

A: As per our guidelines we can only solve first question. Please resubmit other questions as next…

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

A: The entropy change (in J/K) is to be calculated.

Q: Is the formation of acid rain spontaneous or non-spontaneous at 50°C?

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Q: Predict which member of each of the following pairs has the greater standard entropy at 25 °C25 °C:…

A: Answer:- This question is answered by using the simple concept of entropy which is the degree of…

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: Use the table below to answer the questions that follow. The value of standard entropy change, AS°,…

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Q: Which of the following substances is likely to have the highest entropy? Link to Physical Constants…

A: The substances given are He, H2, CO2, N2 and H2O (l).

Q: Predict the sign of entropy. Write P if it is positive and N for negative. • sugar dissolving in tea…

A: Entropy is defined as the randomness of the system.

Q: . Chloroform, CHC13, has a normal boiling point of 61 °C and it enthalpy of vaporization is 29.24…

A: Formula used:- ∆G°=∆H°-T∆S° But in this condition ∆G° = 0  Thus new formula is ∆S° = ∆H°/T

Q: For a nonspontaneous reaction , AS° = 189 J/K, and AH° = 76.3 KJ. At what temperature this reaction…

A: ∆G° = ∆H° - T∆S°  ∆G°<0 for spontaneous reactions

Q: An endothermic reaction proceeds spontaneously. What can you deduce about the sign of Delta S for…

A: The spontaneous nature of the reaction is determined by calculating the change of free energy of the…

Q: A simple chemical system has an entropy value of 8.07E-23 J/mol K. How many microstates does this…

A: By the relationship between entropy and microstate , we have ;  S = KB ln Ω ----------------(I)…