Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure from an initial temperature of 25 °C to a final temperature of 750 °C. The molar heat capacities of solid and liquid aluminum at one bar pressure are 29.2 J mol1 K1 and 31.75 J mol1 K1, respectively. The specific enthalpy of fusion of aluminum at its melting point (660.46 °C) is 396.57 J g1. The molar mass of aluminum is 26.98 g mol1. (Please explain as much as possible. Why did you use the equation? Or what conditions did you see from the question? etc)

Q: Why is the standard entropy of a substance in the gas state greater than its standard entropy in the…

A: The intermolecular force between gas molecules is less than the intermolecular force between liquid…

Q: What is the molar change in entropy (in J/mol-K) associated with the melting of ice at 1 atm if the…

A: Entropy is the measurement of randomness .It can be calculated as below for different processs

Q: Explain how the internal energy and entropy of a system composed of two levels vary with…

A: SOLUTION: Step 1: Consider a two-state system in which the lower state is assigned an energy equal…

Q: The entropy change ΔS for a phase transition equals ΔH/T, where ΔH is the enthalpy change. Why is it…

A:

Q: The standard enthalpies of formation, at 25.00 oC, of methanol (CH4O(l)), water (H2O(l)), and carbon…

A: The heat energy gets measured in J/K and not available for performing useful work is basically…

Q: the enthalpies of formation, standard entropies, and standard heat capacities to calculate the…

A: 2O3 (g) ---------> 3O2 (g) Standard enthalpy of a reaction…

Q: 12 The molar heat of combustion, A H;, of sucrose is -5643.4 kJ mol 1, If 0.250 moles of sucrose is…

A: Given :  12.  ∆Hc° of sucrose = -5643.4 KJ mol-1  Moles of sucrose = 0.250 moles  Temperature = 16°C…

Q: n preparation for a study of the metabolism of an organism, a small, sealed calorimeter was…

A: The expression for the first law of thermodynamics is shown below:   Q - W = dU where; W = work done…

Q: The variation of the Gibbs free energy of a given substance with temperature is given by G = aT + b…

A:

Q: Determine the entropy change for the combustion of liquid ethanol, C2H5OH, under standard state…

A:

Q: Calculate the standard entropy change for the formation of one mole methanol at 25 °C.    2 CO2(g)…

A:

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: Calculate the change in entropy associated with the Haber process to produce ammonia from nitrogen…

A: N2 (g)+3H2 (g)⇌2NH3(g) So(H2) = 130.6 J/mol K So(N2) = 191.50 J/mol K So(NH3) = 192.5 J/mol K

Q: What is the maximum work (in kJ) that can be done with the combustion of 1.0 mole of methanol at 298…

A: W = -∆nRT  Where W = work  ∆n = change in moles       = Sum of coefficients of gaseous product- sum…

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: Calculate the entropy change of the surroundings when 1 mol of a perfect gas expands isothermally…

A:

Q: Calculate the entropy of vaporization when the enthalpy of vaporization of propanol is 30.25 J.…

A: Given that, enthalpy of vaporization of propanol, ∆Hvap =30.25 J/mol This is also known as the heat…

Q: Calculate the change in entropy when one mole of metallic aluminum is heated at one bar pressure…

A: Enthalpy of fusion for 1 mole of Al is 10699.45 J/molInitial temperature = 25 degC = 298.15K KFinal…

Q: The absolute molar entropies of oxygon gas and nitrogen gas are 205 J mol-1 K-1 and 192 J mol-1 K-1…

A: Given : Molar entropy of N2 = 192 J/mol.K Molar entropy of O2 = 205 J/mol.K Moles of N2 = 9.2 mol…

Q: What is the significance of the change in Gibbs free energy (ΔG) for a reaction?

A: In thermodynamics free energy or Gibbs free energy is the energy that is used to express the total…

Q: Use standard molar entropies to calculate the entropy change (in J/K.mol) for the reaction…

A: The standard entropy change of reaction ( ∆S° ) can be calculated from standard molar entropies of…

Q: Calculate the boiling point of carbon tetrachloride if the standard entropy and enthalpy of…

A:

Q: Calculate the standard internal energy of formation of urea, (NH2)2CO, if its standard enthalpy of…

A:

Q: Question attached

A: Given: Temperature=298K Formula: The standard entropy of the reaction can be calculated by using the…

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

A: The increase of entropy per g. atom is to be calculated.

Q: Calculate the standard reaction entropy at 298 K when 1 mol N2O(g) is formed from its elements in…

A: The involved chemical equation would be: N2 (g) + ½ O2 (g) → N2O (g)

Q: How does the standard entropy of a substance depend on its molar mass? On its molecular complexity?

A: Entropy is a thermodynamic property, which is the measure of randomness of a system. Entropy of the…

Q: What is the entropy (S) of a system with 6.4 x 1020 microstates?

A: The relation between entropy and number of microstates is given by Boltzmann's equation - S = KB ln…

Q: The standard enthalpy change for the reaction of between sodium hydroxide and hydrochloric acid can…

A: Given : Concentration of NaOH = 1 mol/dm3 = 1 M                    (Since 1 dm3 = 1 L and the units…

Q: Consider a process in which the entropy of a system increases by 105 J K−1 and the entropy of the…

A: Given information,    The entropy of a system increases by 105 J K−1    The entropy of the…

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

A:

Q: If you have an enthalpy change of -102.2 kJ mol-1 at a temperature of 200C, determine the change  in…

A: Given: Change in enthalpy = -102.2 kJ mol-1 Temperature = 20°C

Q: What is the significance of the change in Gibbs free energy (∆G)for a reaction?

A: The significance of the change in Gibbs free energy (∆G)for a reaction: (i) If ∆G for a reaction…

Q: Consider a process in which the entropy of a system increases by 125 J K−1 and the entropy of the…

A: Entropy change of the universe is the summation of entropy change of the system and entropy change…

Q: Calculate the change in entropy when 250 kJ of energy is transferred reversibly and isothermally as…

A: Solution: Entropy is defined as the measure of the randomness of particles in a system.Change in…

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: Use the data from this table of thermodynamic properties to calculate the maximum amount of work…

A: Dear student, you have not provided the data table link, but I am solving the question based on…

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: Calculate the standard reaction entropy at 298 K of (i) 2 CH3CHO(g) + O2(g) → 2 CH3COOH(l) (ii) 2…

A: I) The given reaction is    2 CH3CHO(g) + O2(g) → 2 CH3COOH(l) the standard reaction entropy at 298…

Q: Use bond enthalpies and mean bond enthalpies to estimate (a) the enthalpy of the anaerobic breakdown…

A: (a) The required reaction is given below. The structure of the reactant and product are given…

Q: Calculate the measurable change in entropy (for the system) when the state of 2.00 mol of diatomic…

A: Change in entropy of system : VfVi = Tf × PiTi × Pf = 408 × 1.50298 × 7.00 = 0.2934  Cv = Cp - R =…

Q: Question attached

A: Entropy of a system is the measure of the randomness or dis-ordered ness of the system. The entropy…

Q: Considering perfect gases, which state function is zero when two substances are mixed?…

A:

Q: Use bond enthalpies and mean bond enthalpies to estimate (a) the enthalpy of the anaerobic breakdown…

A: The combustion of glucose in presence of oxygen will produce carbon dioxide and water molecules.

Q: 2.0 mol of hydrogen gas and 3.0 mol of argon gas are mixed at the same pressure and temperature,…

A: To determine the change in entropy and change in molar Gibbs free energy at 298.15K when 2.0 mol of…

Q: Question attached

A: Given reaction C6H12O6(s) →2 C2H5OH(liq) + 2 CO2(g) Standard molar entropy of component…

Polymerization Kinetics

Polymerization is a chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that diverge in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes. Polymerization is generally classified into step-growth and chain polymerization. Polymers are categorized into linear polymer and cross-linked polymers that are produced either by condensation or additional polymerization.