Heu) at 4.2 K, which one of the following statements For the process He(g) is FALSE? O AH < 0 < 0 0 > b OAV < 0 qy + qp

Q: Calculate the ΔS for the transformation of 3.00 mols of a perfect monoatomic gas, with Cp,m = 5/2 R,…

A:

Q: Deduce the relation pv = nRT where R is a constant called universal.

A: According to the Boyle’s law, at constant temperature (T) and no. of moles (n), According to the…

Q: 2. How much work is done for the sublimstion of one mole of carbon diaxide in terms of the ideal as…

A: Work done for the sublimation of one mole of carbon dioxide = -P∆V

Q: Was Q less than, greater than or equal to K under the initial conditions used? Justify your choice…

A: It is given that reaction for the formation of N2O4 is reversible in nature. Therefore, Le…

Q: Dry nitrogen gas (100.0 L) was bubbled through liquid chloroform, CHCl3, at a given temperature and…

A: Given: T1=22.41oC=(22.41+273) K=295.41 K T2=37.25oC=(37.25+273) K=310.25 K

Q: 15.) Which of the following systems has the greatest change in internal energy? A.) A mixing of two…

A: The internal energy of the system is the sum of all types of energy of the system. During the change…

Q: A 8.31 gram sample of methanol was combusted in a bomb calorimeter. The temp of the calorimeter…

A: To calculate the delta E , we would use the formula : ∆E = q /n  q = heat  n = moles

Q: What is the final pressure (in atm.)?

A:

Q: Under what conditions will the quantities q and w be negative numbers?

A: First law of thermodynamics is stated as follows,

Q: For nitrogen gas the values of C, and C, at 25°C are 20.8 J K-1 mol-1 and 29.1 J K-1 mol-1,…

A: Here we have to determine the fraction of energy used to increase the internal energy of gas and the…

Q: is the following statement correct?

A:

Q: Hn Idul gas undergoes W, and A Ŭ bc The hat absorbed by gas, work done loy sas, and change m…

A: Given: The process is isothermal expansion process.

Q: A chemical reaction takes place in a container fitted with a piston of cross-sectional area 10cm2.…

A: ΔV = 10 cm2 × 8 cm = 80 cm3 = 80 cm3 × (1 m / 100 cm )3 = 8.0 × 10-5 m3

Q: The specific heat capacities (in units of J/g K) of element X, Y and Z are 0.379, 0.485 and 0.349,…

A: Specific heat capacity: The amount of heat that is required by the unit mass of a substance at the…

Q: Derive a relationship between ΔH and ΔE for a process in which the temperature of a fixed amount of…

A: ENTHALPY Enthalpy of a system is defined as the sum of its internal energy and product of its…

Q: (CLO3 A saturated mixture state is O less than 100% vapor O50% liquid and 50% vapor 10% vapor and…

A: Ans of the question a saturated mixture state is-

Q: Two moles of a gas at 1bar and 298k are compressed at constant temperature by the use of constant…

A: Given that: number of moles = 2 moles pressure, P1 = 1 bar pressure, P2 = 5 bar mass = 100 Kg g =…

Q: A sample of an ideal gas undergoes the cycle. A8-c-D¬A depicted below. Al four steps of the cycle…

A:

Q: if change in E is less then zero then what condition should be followed.prove that.

A: Electromotive force denoted as E or emf is defined as energy per unit chargethat is imparted by an…

Q: Which of the following expressions is non-zero?

A: Please see the attachment.

Q: Ap is requi to öbtain a AG 6f The molar volume of H2O(I) is 18.02 cm³/mol. (b) For exactly 1 mol of…

A: ∆g(m)=v(m)∆p ∆P=?

Q: True or False. Support your answers For every process, AUsys = -AUsurr b. For every cyclic process,…

A: first law of thermodynamics

Q: Five moles of monatomic ideal gas enter the abc cycle and during a complete cycle 600 J of heat is…

A: Work done in ca process :

Q: 1 mol of N2 gas in a volume of 300 K and 2 L undergoes an isothermal reversible expansion up to 20 L…

A:

Q: Consider the figure below which shows AG° for a chemical process plotted against absolute…

A: The expression for the spontaneous reaction is shown below: Where; ∆G = change in Gibb’s free…

Q: Determine ΔG0 at 298 K for N2(g) + 3 H2(g) &lt;---&gt; 2NH3(g) given Substance ΔH0f (kJ/mol)…

A: The given reaction is, N2(g) + 3H2(g) → 2NH3(g) The enthalpy change of the reaction can be…

Q: Determine the rote low ex pression for the following recxtion and give units for k.

A: In rate law expression :  Rate is equation is written as product of concentration of reactants with…

Q: 6. For each of the following processes, deduce whether the quantities q, w, AU, and AH are positive,…

A: The spontaneity and the feasibility of a reaction can be explained by using the thermodynamic…

Q: So, when there is no value given for a substance O2, you are to assume that it is zero?

A: ∆Hfo of O2=0∆Hfo of formation of O2=0

Q: A supersonic nozzle is a cone-shaped object with a smallhole in the end through which a gas is…

A: The average speed is the mean of the speeds of different molecules of the gas. It is related to the…

Q: candkpe NOBR(g) = % N2(g) + O2(g) + % Br2(g) from the following information at 298 K: NO(9) = %…

A:

Q: What sign for AS do you expect when the volume of 0.100 mol of an ideal gas at 27 °C is increased…

A:

Q: Consider the process for which 1.00 mol of ethyl acetate, C4H8O2, undergoes the following chang…

A: The given change occurs in two steps:  1. Conversion of ethyl acetate from liquid to vapor(gas) at…

Q: What is AS in kJ/mol-K for the melting of a certain substance if AH fusion = 340 kJ/mol at 485 K?…

A: On applying formula ∆S=∆H/T

Q: A sample of an ideal gas in a cylinder of volume 3.83 L3.83 L at 298 K298 K and 2.26 atm2.26 atm…

A: From given work done for path B is calculated as follows

Q: Why are ∆fusS and ∆vapS of a system always positive values?

A: We have to state reason for positive values of ∆S values.

Q: Calculate S when 0.0385 mol of an ideal gas (Cv,m = 1.5R) at 20.0oC and 1.30 atm expand to 0.900…

A: Temperature can be converted from degree celsius to kelvin by the expression: T1K=20+273.15=293.15…

Q: 5. For an isothermal process, AS = а. q b. qrev/T C. Qrev d. Tqrev e. q +w

A: For an isothermal process, ∆S=?

Q: Consider the following idealized heat engine:| Th Qn Wout

A: carnot engine

Q: Calculate AG° at 595 K for H20(g) + 1/2 02(g) S H2O2(g) using the following data: H2(g) +02(g) 5…

A: We have two reaction that we have to Manipulate in such a way that we get desired equation. While…

Q: (CO2) Removal of (increase, Forward Keq CO2inal + H2Og decrease, no change) in the amount of H:COз…

A: As per our company guidelines we are supposed to answer only first three subparts. kindly repost…

Q: processes would ΔS° be expected to be most positive?

A: 1) Entropy is degree of randomness or disorderness  If number of gaseous moles increases then □S °…

Q: A sample is compressed at constant T = 54.5 K, starting at 1.00E-3 bar, to 1.00E2 bar. A sample is…

A: When sample is compressed the pressure is increased at constant temperature, T =54.5K  then solid…

Q: Cyclopentene, C,H, is a colorless liquid at room temperature that is used in the synthesis of…

A: An equation which shows the rate of a reaction in terms of the molar concentrations of the reactants…

Q: What are the following partial derivatives for an ideal gas when P, V, n, and T are variables? a)…

A: The ideal law states that pressure , temperature and volume are related to each other , that with…

Q: 6- Which of the following statements is false? Temperature is a state function Work is a state…

A: Work can't be a state function because it is proportional to the distance an object is moved, which…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.