A compound is raised to it's boiling point, 39 °C and the enthalpy of vaporization measured to be 60 kJ/mole at this temperature. What is the change in entropy (in J/K) when 7.2 moles of this substance vaporize at the boiling point? Please input your answer to the first decimal place.

Q: methanol, CH3OH, vaporizes at 25°C is 35.4 kJ/mol. What is the entropy change (in J/K) when one mole…

A: Given,   □Hvap = 35.4 kJ/mol T = 25 °c = 298 K □S = □H/T   = 35.4 ×1000/298 = 118.79 J/K-mol

Q: Calculate the change in entropy that occurs in the system when 47.5 g of acetone (C3H6O) vaporizes…

A:

Q: Predict whether the entropy change of the system in N2 (g, 10 atm) —> N2 (g, 1atm) is positive or…

A: The entropy of a substance increases with its molecular weight and complexity and with temperature.…

Q: Determine whether each of the following statements about the thermodynamic functions are True or…

A: Thermodynamic function called Gibbs free energy is used to determine absolutely spontaneity of a…

Q: Given the following values of ΔH∘rxn, ΔS∘rxn, and T, determine ΔSuniv Recall that the change in…

A: ΔG∘rxn=ΔH∘rxn−TΔS∘rxn A)  ΔG∘rxn = 83000 - [302(149)] = 38 kJ  B)  ΔG∘rxn = 83000 - [765 (149)] = -…

Q: A system contains 859 particles and has 4.43 x 1025 possible configurations. What is the entropy of…

A:

Q: 4. What equation is used to calculate the entropy change for a reaction from the standard entropies…

A: Entropy change of reaction depand entropy of reactants and products.

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

A:

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

A:

Q: Suppose we redefine the standard state as P = 2 atm. Find the new standard ΔGf​ values of each…

A: a). HCl(g) The standard state has P= 2 atm.

Q: Describe the spontaneity and entropy of the processes. Sublimation of naphthalene balls as…

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Q: What is the precise definition of entropy? What is the significance of entropy being a state…

A: Entropy is a thermodynamic state function that determines randomness in a system.  When we raise…

Q: How does the entropy (S) of the system change when heating hydrogen gas from 60.0°C to 80.0°C?

A: Entropy is a measure or tendency in nature for systems to went towards a physical or chemical state…

Q: 1A. The following 3 parts pertain to the entropy change for a sample of neon gas initially at 250 K…

A: 1B.Steps required to calculate the Entropy change: 1. First we have to put the entropy change…

Q: Determine the change in extensive entropy for a change in temperature of a unit mass of liquid…

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Q: Predict whether the entropy change of the system in each of the following is positive or negative.…

A: GIVEN:- Predict whether the entropy change of the system in each of the following is positive or…

Q: Indicate whether each statement is true or false. The entropy change of the system is equal and…

A:

Q: During a certain reversible process, the surroundings undergo an entropy change, ∆Ssurr = -78…

A: As per the thermodynamic concept, the entropy of universe is the sum of entropy of system and…

Q: What is the change in entropy (positive, negative, or zero) for the system? Sugar crystals are…

A: When solid dissolved in water, the entropy increases; but considering sugar that is larger when…

Q: Calculate the change of the entropy of the system in J/K for the following phase transition:…

A: Given-> Weight of pentanol = 155.1 gm Molar mass of pentanol = 88.15 g/mole Enthalpy of…

Q: What role did enthalpy play in the melting process of the crayons? 2. How did the melting process…

A: 1. Answer - According to the question - Below the melting point, the changes in enthalpy and entropy…

Q: Determine the entropy change for the combustion of gaseous propane, C3H8, under the standard…

A: Entropy refers to measure of disorder and randomness. For a reaction, standard entropy change of…

Q: For the reaction below, determine the difference in relevant particles that alloW for determination…

A: Interpretation -  To determine the difference in the relevant particle that are allow for the…

Q: The protein lysozyme unfolds at a transition temperature of 70 °C, and the standard enthalpy of…

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Q: Using enthalpies of formation, calculate variation H° for the following reaction at 25°C. Also…

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Q: Neither the change in enthalpy nor the change in entropy is, by itself, sufficient to determine…

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Q: The amount of energy available in a reaction to do work is known as: a. Entropy b. Enthalpy c.…

A:

Q: represents the change in entropy for a system going from 142 possible microstates to 830 possible…

A: In Boltzmann's definition the entropy is the total numbers of possible microstates. the Boltzmann's…

Q: Consider the following thermodynamic data which refer to 298 K. Substance SO2(g) Cl2(3) SO2CI2(g)

A: Hess's Law: The enthalpy and entropy changes of a reaction is calculated by using Hess's law, it is…

Q: A goldfish swims in a large bowl of water at 20 °c . Over a period of time, the fish transfers 120 J…

A: The change in entropy of the water can be determined as follows, dS = dQ/T

Q: How does the entropy of ice at −5°C diff er, if at all, from its entropy at −50°C?

A: Entropy- Entropy is a thermodynamic property. Entropy determines tendency of process. Tendency means…

Q: Estimate the boiling point of an unknown substance in deg C if the latent heat of vaporization of…

A: Answer: Relation between Boiling point, enthalpy of vaporization and entropy of vaporization is…

Q: How do enthalpy and entropy relate to each other? If enthalpy is negative, does that mean that…

A: To measure spontaneity, both the terms, enthalpy and entropy, cannot be used individually that is…

Q: What is the sign of the change in entropy of: Heating liquid water to its boiling point

A: Given  sign of the change in entropy of: Heating liquid water to its boiling point

Q: Indicate whether each statement is true or false. If a system undergoes a reversible process, the…

A: Given: Reversible process is a process which can be reversed back to its initial state after…

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

A: Spontaneity of reaction is governed by its associated enthalpy change, entropy change and absolute…

Q: How are the states of matter arranged in increasing entropy of the system?     Solid < Gas <…

A: Entropy is the degree of randomness or disorder and gases have more disorder because particles can…

Q: Combustion of glucose (CH,1206) is the main source of energy for animal cells: CH1206(s) + 602(8) →…

A: Combustion of glucoseC6H12O6s + 6O2g →           6CO2g + 6H2Ol∆Grxn = -2872 kJGibbs energy for the…

Q: Why do exothermic processes tend to be spontaneous at low temperatures?

A: Why do exothermic processes tend to be spontaneous at low temperatures?

Q: Does the entropy of the system increase, decrease, or stay the same when the volume of a gas…

A: Entropy is the thermal energy of a system per unit of temperature. This energy is not available for…

Q: Acetic acid, CH3COOH, freezes at 16.6°C. The heat of fusion,
Hfus, is 69.0 J/g. What is the change…

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Q: Which of the following results in a decrease in the entropy of the system? Group of answer choices…

A: Since we know that Entropy depends upon on the number of moles of gas molecules on products side and…

Q: Is the change in the enthalpy of reaction or the change in entropy of reaction more sensitive to…

A: So the entropy change for a reaction delta age was specifically defined to be equal to the heat at…

Q: 1) When 120 mg of naphthalene, C1oHae), was burned in a bomb calorimeter the temperature rose by…

A: Standard heat of combustion of Naphthalene = - 5156.1 kJ/mol Standard heat of combustion of Phenol =…

Q: Combustion of glucose (CH0 is the main source of energy for animal cells: CH,0) + 60/g) → 6C0,(g) +…

A: The given data contains, ∆Greaction =-2872 kJ.Number of aminoacids=84

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".