Question:
An Ellingham diagram is used to:
An Ellingham diagram is used to:
Show Hint
The Ellingham diagram is essential for predicting which metal oxides can be reduced by various reducing agents at different temperatures.
Updated On: Jun 19, 2025
- Calculate melting points
- Determine gas fugacity
- Predict reduction feasibility of metal oxides
- Evaluate activity coefficients
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
An Ellingham diagram is a graphical representation that shows the temperature dependence of the standard Gibbs free energy of formation of various metal oxides. It is widely used to predict the feasibility of reduction reactions, particularly for metal extraction. The diagram plots the Gibbs free energy of the reaction (\( \Delta G \)) against temperature for the formation of metal oxides, and the lower the \( \Delta G \), the more favorable the reduction reaction.
By examining the intersection of the lines for a metal oxide and the line for hydrogen, for example, it is possible to predict the temperature at which a metal oxide can be reduced by hydrogen. This makes the Ellingham diagram an essential tool in understanding the reduction feasibility of metal oxides.
Thus, the correct answer is: Predict reduction feasibility of metal oxides.
By examining the intersection of the lines for a metal oxide and the line for hydrogen, for example, it is possible to predict the temperature at which a metal oxide can be reduced by hydrogen. This makes the Ellingham diagram an essential tool in understanding the reduction feasibility of metal oxides.
Thus, the correct answer is: Predict reduction feasibility of metal oxides.
Was this answer helpful?
0
0
Top Questions on Thermodynamics
- The number of independent intensive variables that need to be specified to determine the thermodynamic state of a ternary mixture at vapor-liquid-liquid equilibrium is:
- The directions of the South Pacific Subtropical Gyre and the North Atlantic Subtropical Gyre are ________________ and ________________, respectively.
- GATE XE - 2025
- Thermodynamics
- Thermodynamics
- Air enters a hair dryer at 22 °C and 100 kPa with a velocity of 3.7 m/s, and leaves the dryer at 83 °C and 100 kPa with a velocity of 9.1 m/s. The exit area of the dryer is 18.7 cm\(^2\), and the ambient temperature is 22 °C. The air is an ideal gas with gas constant \(R = 0.287 \, kJ/kg\!-\!K\) and isobaric specific heat \(c_p = 1.005 \, kJ/kg\!-\!K\). If the change in potential energy is neglected, the second law efficiency (in %) of the dryer is ..................... (rounded off to one decimal place).
- GATE XE - 2025
- Thermodynamics
- Thermodynamics
- Consider a gas obeying the relation \[ P(v - b) = RT \] where \(b\) and \(R\) are constants. Which of the following statement(s) is/are CORRECT about the specific heat capacity at constant pressure?
- GATE XE - 2025
- Thermodynamics
- Thermodynamics
- A rigid tank of 300 litre capacity contains 3 kg of oxygen (molar mass = 32 kg/kmol) at \(25^\circ C\). If oxygen behaves as an ideal gas, the pressure (in kPa) inside the tank is ............... (rounded off to two decimal places). Use: \(R_u = 8.314 \, kJ/kmol-K\)
- GATE XE - 2025
- Thermodynamics
- Thermodynamics
View More Questions
Questions Asked in AP PGECET exam
- The multiple access method used in Global Positioning Systems is ________.
- AP PGECET - 2025
- Digital Electronics and Logic Gates
- National Remote Sensing Day is celebrated on ________ every year.
- AP PGECET - 2025
- Remote Sensor
- SDI stands for
- AP PGECET - 2025
- Remote Sensor
- Suppose \( R_1 \) and \( R_2 \) are reflexive relations on a set \( A \). Which of the following statements is correct?
- AP PGECET - 2025
- Set Theory
- Determine the value of $\lambda$ and $\mu$ for which the system of equations
$x + 2y + z = 6$,
$x + 4y + 3z = 10$,
$2x + 4y + \lambda z = \mu$
has a unique solution.- AP PGECET - 2025
- Linear Algebra
View More Questions