CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321196
Which of the following statement is not correct about Ellingham diagram?
1 \(\mathrm{\Delta G}\) increases with an increase in temperature
2 It consists of plots of \(\mathrm{\Delta_{f} G^{o}}\) vs T for formation of oxides
3 A coupling reaction can be well expressed by this diagram
4 It express the kinetics of the reduction process
Explanation:
Ellingham diagrams are based on thermodynamic concepts. It does not tell anything about the kinetics of the reduction process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321197
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
1 \(\mathrm{\mathrm{Mg}}\)
2 \(\mathrm{\mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Fe}}\)
Explanation:
\(\mathrm{\mathrm{As} \mathrm{Mg}}\) is below \(\mathrm{\mathrm{Al}}\) in Ellingham diagram, \(\mathrm{\mathrm{Mg}}\) can be used to reduce \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\) OR \(\mathrm{\mathrm{Mg}}\) being more electropositive it can reduce \(\mathrm{\mathrm{Al}}\).
NEET - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321198
Ellingham diagram normally consists of plots of
Ellingham diagram normally consists of plots of \({{\rm{\Delta }}_{\rm{f}}}{{\rm{G}}^{\rm{o}}}\) \({\rm{vs}}\) \({\rm{T}}\) for the formation of oxides of elements.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321199
In Ellingham diagram, the slope of the curve of the formation metal oxide:
1 Is mostly +ve
2 Is mostly -ve
3 Depends on the type of metal
4 Depends on the formula of metal oxide
Explanation:
By \(\mathrm{\Delta S=-v e}\) \(\mathrm{\therefore \quad T \Delta S}\) becomes more negative on increasing the temperature. \(\mathrm{(\Delta G=\Delta H-T \Delta S)}\)
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CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321196
Which of the following statement is not correct about Ellingham diagram?
1 \(\mathrm{\Delta G}\) increases with an increase in temperature
2 It consists of plots of \(\mathrm{\Delta_{f} G^{o}}\) vs T for formation of oxides
3 A coupling reaction can be well expressed by this diagram
4 It express the kinetics of the reduction process
Explanation:
Ellingham diagrams are based on thermodynamic concepts. It does not tell anything about the kinetics of the reduction process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321197
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
1 \(\mathrm{\mathrm{Mg}}\)
2 \(\mathrm{\mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Fe}}\)
Explanation:
\(\mathrm{\mathrm{As} \mathrm{Mg}}\) is below \(\mathrm{\mathrm{Al}}\) in Ellingham diagram, \(\mathrm{\mathrm{Mg}}\) can be used to reduce \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\) OR \(\mathrm{\mathrm{Mg}}\) being more electropositive it can reduce \(\mathrm{\mathrm{Al}}\).
NEET - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321198
Ellingham diagram normally consists of plots of
Ellingham diagram normally consists of plots of \({{\rm{\Delta }}_{\rm{f}}}{{\rm{G}}^{\rm{o}}}\) \({\rm{vs}}\) \({\rm{T}}\) for the formation of oxides of elements.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321199
In Ellingham diagram, the slope of the curve of the formation metal oxide:
1 Is mostly +ve
2 Is mostly -ve
3 Depends on the type of metal
4 Depends on the formula of metal oxide
Explanation:
By \(\mathrm{\Delta S=-v e}\) \(\mathrm{\therefore \quad T \Delta S}\) becomes more negative on increasing the temperature. \(\mathrm{(\Delta G=\Delta H-T \Delta S)}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321196
Which of the following statement is not correct about Ellingham diagram?
1 \(\mathrm{\Delta G}\) increases with an increase in temperature
2 It consists of plots of \(\mathrm{\Delta_{f} G^{o}}\) vs T for formation of oxides
3 A coupling reaction can be well expressed by this diagram
4 It express the kinetics of the reduction process
Explanation:
Ellingham diagrams are based on thermodynamic concepts. It does not tell anything about the kinetics of the reduction process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321197
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
1 \(\mathrm{\mathrm{Mg}}\)
2 \(\mathrm{\mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Fe}}\)
Explanation:
\(\mathrm{\mathrm{As} \mathrm{Mg}}\) is below \(\mathrm{\mathrm{Al}}\) in Ellingham diagram, \(\mathrm{\mathrm{Mg}}\) can be used to reduce \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\) OR \(\mathrm{\mathrm{Mg}}\) being more electropositive it can reduce \(\mathrm{\mathrm{Al}}\).
NEET - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321198
Ellingham diagram normally consists of plots of
Ellingham diagram normally consists of plots of \({{\rm{\Delta }}_{\rm{f}}}{{\rm{G}}^{\rm{o}}}\) \({\rm{vs}}\) \({\rm{T}}\) for the formation of oxides of elements.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321199
In Ellingham diagram, the slope of the curve of the formation metal oxide:
1 Is mostly +ve
2 Is mostly -ve
3 Depends on the type of metal
4 Depends on the formula of metal oxide
Explanation:
By \(\mathrm{\Delta S=-v e}\) \(\mathrm{\therefore \quad T \Delta S}\) becomes more negative on increasing the temperature. \(\mathrm{(\Delta G=\Delta H-T \Delta S)}\)
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321196
Which of the following statement is not correct about Ellingham diagram?
1 \(\mathrm{\Delta G}\) increases with an increase in temperature
2 It consists of plots of \(\mathrm{\Delta_{f} G^{o}}\) vs T for formation of oxides
3 A coupling reaction can be well expressed by this diagram
4 It express the kinetics of the reduction process
Explanation:
Ellingham diagrams are based on thermodynamic concepts. It does not tell anything about the kinetics of the reduction process.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321197
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
1 \(\mathrm{\mathrm{Mg}}\)
2 \(\mathrm{\mathrm{Cu}}\)
3 \(\mathrm{\mathrm{Zn}}\)
4 \(\mathrm{\mathrm{Fe}}\)
Explanation:
\(\mathrm{\mathrm{As} \mathrm{Mg}}\) is below \(\mathrm{\mathrm{Al}}\) in Ellingham diagram, \(\mathrm{\mathrm{Mg}}\) can be used to reduce \(\mathrm{\mathrm{Al}_{2} \mathrm{O}_{3}}\) OR \(\mathrm{\mathrm{Mg}}\) being more electropositive it can reduce \(\mathrm{\mathrm{Al}}\).
NEET - 2018
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321198
Ellingham diagram normally consists of plots of
Ellingham diagram normally consists of plots of \({{\rm{\Delta }}_{\rm{f}}}{{\rm{G}}^{\rm{o}}}\) \({\rm{vs}}\) \({\rm{T}}\) for the formation of oxides of elements.
CHXII06:GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS
321199
In Ellingham diagram, the slope of the curve of the formation metal oxide:
1 Is mostly +ve
2 Is mostly -ve
3 Depends on the type of metal
4 Depends on the formula of metal oxide
Explanation:
By \(\mathrm{\Delta S=-v e}\) \(\mathrm{\therefore \quad T \Delta S}\) becomes more negative on increasing the temperature. \(\mathrm{(\Delta G=\Delta H-T \Delta S)}\)