If a binary system exihibits a miscibility gap in the solid state, then the enthalpy of mixing in the solid state, ΔHmix should necessarily be
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Metallurgical Engineering · all questionsMetallurgical Thermodynamics and Kinetics
Metallurgical Thermodynamics and Kinetics
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The vapour pressure of a solid M varies with temperature T in K, as
In p(atm) = - 0.85 In T + 21.46
The vapour pressure of liquid M varies with temperature T, in K, as
In p (atm) = 0.85 In T + 20.31
The temperature of the triple point of M, in K is
In p(atm) = - 0.85 In T + 21.46
The vapour pressure of liquid M varies with temperature T, in K, as
In p (atm) = 0.85 In T + 20.31
The temperature of the triple point of M, in K is
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The units of the rate constant for it second order reaction are
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The activity co-efficient of the solute in a dilute solution
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The expression for gas law is
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The limiting condition for the appearance of the miscibility gap in a binary solution is
Where, G is the Gibbs free energy and X is the mole fraction of component Z.
Where, G is the Gibbs free energy and X is the mole fraction of component Z.
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As the concentration of point defects in a crystal increases, its configurational entropy
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For a first order chemical reaction the concentration of the reactant decreases
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Which of the following- properties is Intensive?
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FeO(s) + CO(g) = Fe(s) + CO2(g); K = 0.435 at 1173 K. At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173K?
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AG(s) = Ag(l), T = 1234K; ΔH = 11300 J.mol-1 ΔCP = Cp(l) - Cp(s) = 0
When one mole of super cooled liquid silver freezes at an ambient temperature of 1000 K, the total entropy change of the system (Ag) and the surroundings is . . . . . . . . J.K-1.
When one mole of super cooled liquid silver freezes at an ambient temperature of 1000 K, the total entropy change of the system (Ag) and the surroundings is . . . . . . . . J.K-1.
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The heat capacity of diatomic ideal gas
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For the reaction, A = X + Y, the respective concentrations are CA, CX and CY. The forward reaction rate constant is kf and the backward reaction rate constant is kb. Choose the correct statement from the following:
P. At equilibrium, kf CA > kB CxCy
Q. If the reaction is irreversible than, kb CXCY = 0
R. The backward reaction rate will essentially be first order, if the forward reaction rate is first order.
S. Activation energy for the first order forward reaction will be independent of temperature.
P. At equilibrium, kf CA > kB CxCy
Q. If the reaction is irreversible than, kb CXCY = 0
R. The backward reaction rate will essentially be first order, if the forward reaction rate is first order.
S. Activation energy for the first order forward reaction will be independent of temperature.
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If, where k1, k2 and k3 are constants. If k2ΔX < ΔX, the value of γ up to first order of approximation would be
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Consider the reaction:
Fe3O4 (solid, pure) + CO (gas, 1 atm) → 3FeO (solid, pure) + CO2 (gas, 1 atm)
For this reaction, ΔG1200 = -8000 joules per mole of CO and R = 8.314 J mol-1 K-1.
The equilibrium ratio, reaction at 1200 K and 1 atm is . . . . . . . .
Fe3O4 (solid, pure) + CO (gas, 1 atm) → 3FeO (solid, pure) + CO2 (gas, 1 atm)
For this reaction, ΔG1200 = -8000 joules per mole of CO and R = 8.314 J mol-1 K-1.
The equilibrium ratio, reaction at 1200 K and 1 atm is . . . . . . . .
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The activation energy for a reaction is 100 kJ/mole. The approximate increase in temperature required for doubling the rate of reaction from that at 25°C, is . . . . . . . . °C.
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The concentration of a dissolved gas is directly proportional to the partial pressure of that gas
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For a binary solution A - B, the α-function is given by Where, X is the mole fraction of component A. The limiting value of a when X approaches zero, is
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The portion or quantity of the universe/matter that is selected for study are separated from surrounding is
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Q100
Open questionIf a solid is compressed adiabatically in its elastic range, its
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