The normal boiling point of ethanol is 78.3˚C, and its molar enthalpy of vaporization is 39.3 kJmol-1 (a) What is the change in entropy upon vaporization of ethanol at its boiling point?

Q: The enthalpy of vaporization of chloroform (CHCl3) is 29.4 kJ mol−1 at its normal boiling point of…

A: Given that, Enthalpy of vaporization of chloroform, ∆Hvap(CHCl3) chloroform= 29.4 kJ mol−1 =29400 J…

Q: How does temperature effect spontaneity? Under what conditions is enthalpy the dominant…

A: We know that, ΔG = ΔH - TΔS For a reaction to be spontaneous ΔG must be negative in sign ΔG < 0 ,…

Q: The normal boiling point of ethanol is 73.2˚C, and its molar enthalpy of vaporization is 41.2…

A: Given : Normal boiling point of ethanol = 73.2 ˚C And enthalpy of vaporization, ΔHvap = 41.2 KJ/mol…

Q: AS ΔΗ- ΔΗ: ↑

A: Entropy is the term defined as irregularities of the atoms if the irregularities increase then the…

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: The standard molar entropy for Br2(g) is 245.46 J/(mol-K) at 25°C. Given that AS - 104.58 J/K for…

A: For the dissociation of Br2 (g) into Br (g) at 25oC, the entropy change, ΔS, is calculated as shown…

Q: Elemental mercury is a silver liquid at room temperature. Its normal freezing point is -38.9 °C, and…

A: The freezing point is an exothermic process in which heat is transferred from the system to the…

Q: Given: H2O(l) → H2O(g) ΔH° = 40.7 kJ at 373K What is the entropy change in the system (ΔS) when…

A: The given chemical equation as follows --- H2O (l)     →     H2O (g)       ΔH° = 40.7 kJ at 373 K…

Q: Elemental mercury is a silver liquid at room temperature. Its normal freezing point is -38.9 °C, and…

A: The normal freezing point of mercury is -38.9 C. The given mass of mercury is 50.0 g. The value of…

Q: If the normal boiling point of a liquid is 67 °C, and thestandard molar entropy change for the…

A: The boiling point of a given liquid can be defined as the temperature at which the vapor pressure of…

Q: Which of the following compounds has the largest standard molar entropy, Sᵒ (298.15 K O a. C…

A: Multiple choice question is given here.

Q: Glucose is broken down in muscle tissue to form lactic acid under anaerobic conditions. The…

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

A:

Q: How can you calculate the standard entropy change for a reaction from tables of standard entropies?

A: The standard entropy change for a reaction from tables of standard entropies can be calculated by…

Q: 1. Calculate the entropy change when 2.50 mole of sulphur dioxide gas are heated from 25 to 70 °C at…

A: S is a symbol for entropy . It is a state function.  It is a measure of  randomness of system .…

Q: If the absolute entropy for O2 (g) is 126 J/(mole∙K), what is the ΔS for the complete combustion of…

A: C2H4 (g) on complete combustion gives CO2(g) and H2O(g)  We need a balanced equation for the…

Q: What is the entropy change for the solidification of 1.00 oz. (28.3 g) of liquid gold at 1064°C? The…

A: Given,Mass of gold = 28.3 gTemperature, T = 1064°C = (1064 + 273) K =1337 KEnthalpy of fusion of Au…

Q: Calculate how entropy of 100 g of water changes when it is heated(under reversible conditions)from…

A: Here, since 00C is given for temperature, I consider it as 0oC and 1000C as 100oC That is…

Q: Determine the: a. Heat of the reaction, AH b. AS c. AG at 25°C for the combustion of ammonia,…

A: a.

Q: The enthalpy of vaporization of methanol is 35.27 kJ mol−1 at its normal boiling point of 64.1 °C.…

A: Enthalpy of vaporization (∆Hvap)  is defined as the minimum amount of energy that must have supplied…

Q: Predict the sign of entropy. Write P if it is positive and N for ative. Write your answer on the…

A: Entropy:  Degree of randomness (or) disorderness is said to be entropy It is represented by ∆S…

Q: Calculate the entropy change for the following process: H₂O (1, 298 K, 1 bar)→ H₂O (g, 398 K, 0.8…

A: The change in entropy can be calculated as follows

Q: the decomposition of ammonia to nitrogen and hydrogen gas. Substance S° (J/mol · K) H2(g) 130.7…

A: Entropy measures the randomness of the molecule. Gaseous molecule have higher entropy than liquid…

Q: 1. (2)What is the sign of the entropy change of the system (ΔSsys)(methanol (liq, at 290K) →…

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

Q: Predict the sign of the entropy change (ΔS˚) for the reaction. Justify your answer. Use the…

A: Given, ΔH˚rxn in kJ/molrxn

Q: The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 oC to 560…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Determine the change in the standard entropy, AS°, at 298K, for the given reaction using the…

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Q: During a hypothetical process, the entropy of a system increases by 105 J K-1 while the entropy of…

A:

Q: The enthalpy of vaporization of chloroform (trich loromethane).CHCI3, is 29.4 kJ mol-1 at its normal…

A: a.

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

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: The enthalpy change (ΔHrxn) for a certain reaction is 700.0 kJ/mol.  The same reaction has an…

A:

Q: Calculate the standard free-energy change (ΔGo) at 25°C for the reaction H2(g)+O2(g) ⇌ H2O2(l)

A:

Q: What is the molar entropy of a pure crystal at 0 K? What is the significance of the answer to this…

A: The third law of thermodynamics states that entropy of a pure crystal at a temperature of zero…

Q: The enthalpy for a certain process is 146.4 kJ/mol and the entropy for the process is 463.6 J/K.  At…

A:

Q: A sample of carbon is burned in a calorimeter. If the calorimeter absorbs 81 J/K during the reaction…

A: Solving only first question in accordance with guidelines. You can repost remaining questions.

Q: If the normal boiling point of a liquid is 67 °C, and the standard molar entropy change for the…

A: Standard molar enthalpy change can be expressed in terms of standard molar entropy change and…

Q: If the entropy change for the reaction is ∆Ssys = −308.6 J mol-1 K-1  at 298,15 K,  what value…

A: Enthalpy as well as entropy are interrelated concepts that are linked together with Gibbs energy…

Q: What are the criteria for spontaneity(a) in terms of entropy and(b) in terms of free energy?

A: The Gibbs free energy is an important parameter to predict the feasibility of a process. The entropy…

Q: (a) Does the entropy of the surroundings increase for spontaneousprocesses? (b) In a particular…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: 5. When 2.00 mol of an ideal gas at 330K and 3.50 atm are compressed isothermally to some pressure…

A: Given, No. of moles = 2 Temperature = 330 K Initial pressure = 3.50 atm Entropy = -25.0 J/K…

Q: The ethyl alcohol vaporizes at 78 degrees Celcius, what is the change in entropy if 0.25 kg…

A: Solution - According to the question - Given - Change in entropy = ? S = ? H / T ? H = Heat change…

Q: 1. The heat capacity at 1 atm. pressure of solid magnesium in the temperature range from 0 °C to 560…

A: Since in the question its not mentioned that in what unit the T is being substituted in Cp equation.…

Q: . What is the sign of the entropy change of the system (ASsys)(methanol (liq, at 290 K) → methanol…

A: In given reaction methanol at liquid state gets converted to methanol at gaseous state. Generally…

Q: Consider the reaction N2(g) + 3H2(g)- →2NH3(g) Using standard thermodynamic data at 298K, calculate…

A: Please have a look on the solution:

Q: What is entropy, and what is ΔS for a reaction, and what does it mean if ΔS is positive or negative?

A: Answer  The measurement of randomness is called entropy, entropy…

Q: Considering entropy (S) as a thermodynamic parameter , the criterion for spontaneity of any process…

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Q: Octane is typical of the components of gasoline. Estimate (a) the entropy of vaporization, (b) the…

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