Two containers are connected by a valve. In container A, there are 3 mols of He. In container B is 4 mols of Ar. If both containers are 4 L and T=300K, calculate the entropy change after the valve is opened (allowing the gases to mix) as well as the heat associated with the mixing.

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: A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a…

A: GIVEN: To Solve: Solution:

Q: Consider a process in which 250 kJ of energy is transferred reversibly and isothermally as heat to a…

A: Entropy is the measure of degree of randomness. The change in entropy can be measured as follows:

Q: Consider the reaction CH4(g) + H2O(g)CO(g) + 3H2(g) for which H° = 206.1 kJ and S° = 214.7 J/K at…

A:

Q: 9. A chemical reaction under standard state has the enthalpy of reaction: A,H° = +117 kJ and the…

A: B) The reaction is entropy driven.

Q: A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a…

A: The first reaction is written as follows: 6Cl2(g) + 2Fe2O3(s) →4FeCl3(s) + 3O2(g) Gibbs free energy…

Q: For the isothermal expansion of a gas into a vacuum,ΔE = 0, q = 0, and w = 0. (a) Is this a…

A: (a) The spontaneous process is the process which starts on its own or initiate without any external…

Q: A process increases the entropy of the system by 128 J/mol K and absorbs 54 kJ/mol of heat from the…

A: Given: Change in entropy (∆S) = 128 J/mol•K Absorbed heat=54 kJ/mol =54×103 J/mol    To determine…

Q: two moles of an ideal gas X and two moles of an ideal gas Y, initially at the same temperature and…

A: As, ideal gas mixing at constant temperature and constant pressure has increased entropy, obtained…

Q: starting from the definition of Gibbs Free Energy, the 1st law of thermodynamics, the 2nd law of…

A: To derive the criteria for spontaneity for Gibbs free energy.

Q: For water, ΔHfusion = 6.02 kJ/mol and ΔHvap = 40.65 kJ/mol.   If 0.250 moles of water vaporizes at…

A: ∆Ssurrounding   = - ∆Ssystem. ∆Ssurrounding    = - ∆Hvaporization / Tboiling.

Q: The following reaction for the formation of glucose from carbon dioxide and water:…

A: The given reaction is,

Q: What is the change in entropy when 0.200 mol of potassium freezes at 63.7°C (H(fus)=2.39 kJ/mol)?

A: Entropy is a state function and it gives a measure of randomness in a system.Change in entropy is…

Q: Calculate the standard free-energy change for the formation of NO(g) from N2(g) and 02(g) at 298 K:…

A: Given:

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A: ∆G°rxn = - 30.5 kJ / mol [ATP] = 5.0 mM = 0.005 M [ADP] = 0.80 mM = 0.0008 M [HPO4 2-] = 5.0 mM =…

Q: Recall that for a monoatomic ideal gas, CV = (3/2)R. If an equal number of moles of any three ideal…

A: The ideal gas equation is given by  PV = nRT

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: The heat capacity, Cp, of liquid carbon disulfide is a relatively constant 78 J/(mol K). However,…

A: Solution In this question we use Third Law of Thermodynamics it tells us that as T → 0 K, S → 0.…

Q: The vaporization of a liquid at a certain temperature and pressure is spontaneous. For this process,…

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

Q: Consider a 1.2 mol block of iron with a specific heat capacity of 0.44 J/g°C. The atomic mass of Fe…

A: The amount of heat required to raise the temperature of the sample is given by: q =m c∆Tq is the…

Q: When a 2.00 g sample of KSCN is dissolved in water in a calorimeter that has a total heat capacity…

A: The molar heat is the quantity of heat required by one mole of a substance to raise its temperature…

Q: As shown here, one type of computer keyboard cleaner contains liquefied 1,1-difluoroethane 1C2H4F22,…

A: The degree of randomness is called entropy. Entropy in the high-pressure region is high due to the…

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

A: Given,the reaction is. N2(g) + 3H2(g) <--------> 2NH3 We have to calculate change in entropy.

Q: The entropy change for the process                                      H2 O(s) ⟶ H2 O(l)is 22.1 J/K…

A:

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

A:

Q: Potassium nitrate is mixed into water which causes an endothermic reaction.  The initial water temp…

A:

Q: If a system changes from two to six microstates, calculate the change in entropy for the process.…

A: Given data, Initial microstate (Winitial) = 2 Final microstate (Wfinal) = 6 The entropy of a system…

Q: The industrial synthesis of chloroform by the reaction of methane with Cl2 is carried out according…

A: The given equation is not balanced, so the first step is to balance the equation.  CH4 (g) + 3Cl2…

Q: If an ideal gas at 1.75 atm and 25 degrees Celsius is isothermally compressed from 800 mL to 150 mL,…

A: Initial volume of the gas, V1 =800 mL Final volume, V2 = 150 mL Calculation of initial moles of the…

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: The entropy change for the process H2O(s)⟶H2O(l) is 15.2 J/K and requires that the surroundings…

A: Reaction: H2O(s) ⟶ H2O(l) ∆Ssystem = 15.2 J/K ∆H = 38.6 KJ ∆STotal =? T = 76.3 °C = 76.3 + 273.15 =…

Q: What is the entropy of the process when 0.6831 moles of N 2 gas are compressed from 54.42 L to 28.11…

A:

Q: For an ideal solution containing 500 g toluene (92.14 g/mol) and 300 g xylene (106.16 g/mol)…

A: No of moles of toluene and xylene are calculated as follows: ntoulene=500 g92.14 g/mol=5.4265…

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: A refrigerator works by forcing heat out of the system and reverses the direction of the Carnot…

A: Total work done by refrigerator is given by  W = nRT2lnVA/VB - nRT11lnVc/VD Efficiency of…

Q: Which is spontaneous?   this reaction

A: Given temperature =  144.0°C  Given two reaction  C3H8g + 5O2g ---> 3CO2g+ 4H2O ΔH= −2220.kJ ΔS =…

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

A: Given data -  Mass of methanol = 64.1 g  Molar mass of methanol = 32.04 gmol-1   Enthalpy of…

Q: 4) Consider the isothermal expansion of a 1.00 mol sample of ideal gas at 37 from the initial…

A: Dear student ,   since you have posted multiple parts questions we are allowed to solve only first…

Q: The chemical reaction that causes aluminum to corrode in air is given by 4Al+3O2→2Al2O3 in which…

A:

Q: Combustion of glucose (C6H12O6) is the main source of energy for animal cells: C6H12O6(s)+  6O2(g)→…

A: The given combustion reaction is - During the combustion of 1 mole of glucose, 2872 kJ energy is…

Q: 4. The entropy change for the process H2O(s) → H2O(1) is 22.1 J/K and requires that that…

A: Given:  ∆Ssystem = 22.1 J/K  qsystem = -qsurrounding = 6.0 KJ = 6000 J  Temperature (T) = 10°C = 283…

Q: 1.94 x 1024 molecules of an ideal gas with energy E = NKBT is subjected to a cyclic, quasi- static…

A: Answer: Average energy of N gas molecules is  E=32kBT Here: kB=Boltzmann constantT=Temperature (in…

Q: Recall that for a monoatornic ideal gas, CV = (3/2) *R . If an equal number of moles of any three…

A: For monoatomic ideal gas  CV = (3/2)R  Change in entropy is given as follows  ∆S = -R [n1lnx1 +…

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

A:

Q: How much heat is removed from the condensation of water at 25°C? Given the standard entropy of the…

A: In this question we need to find out latent heat of vaporization. Let us solve this step by step.

Q: The industrial synthesis of chloroform by the reaction of methane with Cl2 is carried out according…

A:

Q: For a particular chemical reaction H = 6.8 kJ and S = –29 J/K. Under what temperature condition is…

A: The Gibbs free energy change for a reaction is negative for a spontaneous reaction and is zero for a…

Q: A certain reaction has ∆H ° = +23.7 kJ and ∆S° = +52.4 J>K. Is the reaction spontaneous at 298 K…

A: Entropy is the measure of disorderness or randomness of a system. The standard value of entropy can…

Q: Consider the reactionCa(OH)2(aq) + 2HCl(aq)CaCl2(s) + 2H2O(l)for which H° = -30.20 kJ and S° = 205.9…

A: