Does the entropy of the system increase, decrease, or stay the same when (a) a solid melts?

Q: Why does the dissolution of MgCl2 have a negative entropy value?

A: The entropy represents the randomness present in a system. The solid phase has less entropy than the…

Q: Is change in Gibbs free energy for the melting of ice greater or less than zero? A>0 C.-0 D. It…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: 3. The third law of thermodynamics can be combined with experimental data to provide an absolute…

A: Third law of thermodynamics combined with experimental data to determine absolute value of which…

Q: Suppose a certain small bird has a mass of 30 g. What is the minimum mass of glucose that it must…

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Q: Explain how thermodynamic stability differes from kinetic stability. Can a substance or system be…

A: Kinetics is about how a reaction takes place, whether slow or fast.Thermodynamics is about if a…

Q: By what means can the internal energy of a closed system increase?

A: Closed system is the physical system in which transfer of mass can't be possible.

Q: Indicate whether each of the following statements is true or false. If it is false, correct it.…

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Q: Discuss the statement that a system and its surroundings are distinguished by specifying the…

A: By definition, a system is generally any collection of material or space that are similar or…

Q: Calculate the equilibrium constant at 37oC for the reaction Glucose + 6O2 + 36ADP + 36Phospate →…

A: Given,  ΔGo= -423 kcal/mol

Q: 2. A mixture consists of nitrogen (28 g/mol) and oxygen (32 g/mol). Decreasing the Gibbs free energy…

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Q: Look up the boiling point of benzene. Then calculate the change in Gibbs Free Energy for che…

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Q: What can be said about the sign of the entropy when solid NaCl is dissolving in water? What can be…

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Q: The change in Gibbs energy that accompanies the oxidation of C,H0,(s) to carbon dioxide and water…

A: Given data, Mass of the person (m)= 65 kg The change in Gibbs free energy = -2808 kJ mol-1 Height…

Q: Calculate the standard reaction entropy at 298 K when 1 mol NH3(g) is formed from its elements in…

A: Given: Temperature(T)= 298 K When 1 mol of NH3 is formed from its elements in their reference…

Q: A thermodynamic quantity that is a measure of randomness or disorder in a system is

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Q: Calculate the change in entropy of a system when 2 mol water vapour at 150 ⁰C is cooled down to -10…

A: I have given the answer in the explanation section. Hope you  will understand that.

Q: What proportions of hexane and heptane should be mixed (i) by mole fraction, (ii) by mass in order…

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Q: The standard molar entropy of liquid water at 273.15 K is 65 J K−1 mol−1, and that of ice at the…

A: Given information: Standard molar entropy of water = 65 J/K.mol Standard molar entropy of ice = 43…

Q: The difference in a chemical potential of a particular substance between two regions of a system is…

A: The Gibbs energy change for transfer of dn moles of a substance from region 1 with chemical…

Q: What is the change in entropy when 0.125 mol of potassium freezes at 67.2°C (Hfus = 2.39 kJ/mol)?

A: Freezing point, standard enthalpy of fusion and standard entropy can be related by the equation…

Q: The difference in a chemical potential of a particular substance between two regions of a system is…

A: Change in mole = 0.15 mmol Change in chemical potential = - 8.3 kJ/mol

Q: Does the entropy of the system increase, decrease, or staythe same when (a) the temperature of the…

A: The maximum possible arrangements of a molecules or the randomness is called the entropy of the…

Q: Why does decomposition of carbonic acid ( H2CO3) and carbon dioxide ( CO2) result to an increase in…

A: Entropy is the measure of randomness or disorderness of a system. When a substance decomposes into…

Q: Describe the first and second laws of thermodynamics and how they relate tochemical reactions.

A: To find: The description about first and second laws of thermodynamics

Q: Two ideal gases under same pressure and temperature are allowed to mix in an isolated system – what…

A: SOLUTION: Step 1: In an isolated system, during mixing of gases, there is no exchange of energy or…

Q: In a particular biokgikal reaction taking place in the body at 37 C, the change in enthalpy was -125…

A: The change in Gibbs free energy is given by,∆G=∆H-T∆Sthe total entropy change for universe will be…

Q: Give examples of chemical systems that are (a) open, (b) closed, (c) isolated.

A: Open system: An open system can exchange energy and matter with environment. Example: Cup of water (…

Q: At 25 °C, the equilibrium partial pressures for the reaction 2 A(g) + 4 B(g) =2C(g) + D(g) were…

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Q: Define Gibbs energy.

A: Thermodynamics is the study of effects of work, heat and energy on a system. It basically tells how…

Q: 4. During the process of freezing, what do you know about changes in the temperature and entropy of…

A: Given statement is :  During the process of freezing, what do you know about changes in the…

Q: When is Gibbs free energy negative? If is it spontaneous or non-spotaneous?

A: Gibbs free energy change is a thermodynamic parameter, which is associated with the enthalpy and…

Q: is often interpreted as a measure of the disorder or randomness of a system. It is a representation…

A: Fill in the blank

Q: Two nonpolar organic liquids, hexane (C6H14) and heptane(C7H16), are mixed. (a) Do you expect ΔHsoln…

A: a) Calculation of the total enthalpy of mixing of hexane and heptane: So, the molecular interaction…

Q: Which of the following is likely to have the highest standard entropy in the liquid state? O…

A: Entropy is the measure randomness or disorderness of molecule

Q: What is the chemical significance of a positive Gibbs free energy change and what is the chemical…

A: The amount of energy available for doing some useful work is termed as free energy or Gibbs free…

Q: The Gibbs Free Energy Equation: AG change in free energy ΔΗ change in enthalpy TAS (temperature)…

A: Gibbs's free energy measures the spontaneity of the process. The Gibbs free change for a given…

Q: For a process that occurs at a constant temperature, does the change in Gibbs free energy depend on…

A: The Gibbs energy change can be defined by the expression as- ∆G=∆H−T∆S where ΔG: Gibbs Free Change…

Q: Consider the thermodynamic quantities E, 9, and w. Which of these quantities are state functions?

A: Examples of state functions ΔΗ,-ΔG ,ΔΤ Examples of path functions - work (w) - heat (q)…

Q: of configurat 3) Discuss the diagram of the molar Gibbs free energy (or chemical potential) versus…

A: The solution of the question is given below:

Q: Fill the table with their respective standard entropy of reaction and show the solutions.

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Q: what is the difference b/n spontaneity criterial of simple and non simple systems in terms of gibbs…

A: Simple system is the single state system having no internal boundaries. Non simple system has…

Q: Under what circumstances may the properties of the system alone be used to identify the direction of…

A: A reaction which occurs without any intervention in the given set of conditions is termed as…

Q: What would the entropy be for a system with 6.05E+1 microstates, in J/mol-K?

A: The relationship between number of micro-states with entropy is given as follows:

Q: Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its…

A: No, this is not an isothermal process. Temperature of initial state ( state 1 ) and final state (…

Q: Explain which reaction is non-spontaneous and justify your answer in terms of change in enthalpy and…

A: Given : reaction