Thermodynamic Equilibrium - Askmemetallurgy

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Asked: April 10, 2020In: Thermodynamics & Rate Processes

GATE MT 2016 Q.42 Zinc oxide is reduced at a constant temperature in a closed reactor using ZnO(s) and C(s) as the only starting materials. The following reactions are assumed to be at thermodynamic equilibrium: ZnO(s) + C(s) = Zn(g) + CO(g) 2CO(g) = CO2(g) + C(s) Assume ideal gas behaviour. Based on mole balance, the relationship applicable to the system at equilibrium is

Poll Results

55%(A) eZn = eCO + 2eCO2 ( 11 voters )

10%(B) eZn = 2eCO + eCO2 ( 2 voters )

20%(C) eZn = eCO + eCO2 ( 4 voters )

15%(D) eZn = 0.5 eCO + 2eCO2 ( 3 voters )

Based On 20 Votes

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Asked: April 7, 2020In: Thermodynamics & Rate Processes

GATE MT 2016 Q5. During the roasting of a sulfide ore of a metal M, the possible solid phases are M, MS, MO and MSO4. Assuming that both SO2 and O2 are always present in the roaster, the solid phases that can co-exist at thermodynamic equilibrium are

Poll Results

12.5%(A) M, MS, MO, MSO4 ( 2 voters )

25%(B) M, MO, MSO4 ( 4 voters )

62.5%(C) MS, MO, MSO4 ( 10 voters )

0%(D) M, MSO4

Based On 16 Votes

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Asked: March 28, 2020In: Physical Metallurgy & Heat treatment

GATE MT 2014 Q50. Two phases 𝛼𝛼 and 𝛽𝛽 are in thermodynamic equilibrium. If 𝑥𝑥 and 𝑦𝑦 are the only components present in the phases 𝛼𝛼 and 𝛽𝛽 and if 𝜇𝜇𝑖𝑖 𝑗𝑗 represents the chemical potential of component 𝑖𝑖 in phase j, then the condition for equilibrium is:

Poll Results

0%(A)

16.67%(B) ( 2 voters )

66.67%(C) ( 8 voters )

16.67%(D) ( 2 voters )

Based On 12 Votes

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GATE MT 2014 Q50. Two phases 𝛼𝛼 and 𝛽𝛽 are in thermodynamic equilibrium. If 𝑥𝑥 and 𝑦𝑦 are the only components present in the phases 𝛼𝛼 and 𝛽𝛽 and if 𝜇𝜇𝑖𝑖 𝑗𝑗 represents the chemical potential of component 𝑖𝑖 in phase j, then the condition for equilibrium is:

Askmemetallurgy Official

Asked: March 20, 2020In: Thermodynamics & Rate Processes

GATE MT 2013 Q11. When two phases α and β in an alloy are in thermodynamic equilibrium, then

Poll Results

5.88%(A) ( 1 voter )

5.88%(B) ( 1 voter )

35.29%(C) ( 6 voters )

52.94%(D) ( 9 voters )

Based On 17 Votes

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GATE MT 2013 Q11. When two phases α and β in an alloy are in thermodynamic equilibrium, then

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