Ellingham Diagrams

IMPORTANT

Ellingham Diagrams: Overview

This topic covers concepts, such as, Ellingham Diagram, Applications of Ellingham Diagram & Limitations of Ellingham Diagram etc.

Important Questions on Ellingham Diagrams

MEDIUM
IMPORTANT

In the Ellingham diagram for the solid metals A and B, gaseous oxides BO2 and AO are:

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MEDIUM
IMPORTANT

Which of the following metals cannot be obtained by reduction of its metal oxide by aluminium?

MEDIUM
IMPORTANT

Which one of the following statements is not correct?

MEDIUM
IMPORTANT

How is the concept of coupling reactions useful in explaining the occurrence of non-spontaneous thermochemical equations? Explain with an example.

HARD
IMPORTANT

Explain the reason due to which Ellingham diagram does not explain the kinetics of the reduction process.

HARD
IMPORTANT

Explain limitations of Ellingham diagram based on the kinetics of the reaction.

HARD
IMPORTANT

What are the limitations of Ellingham's diagram.

EASY
IMPORTANT

Considering Ellingham diagram, which of the following metals can be used to reduce alumina?

HARD
IMPORTANT

Carbon monoxide is more effective reducing agent than carbon below 983 K but above this temperature, the reverse is true –Explain.
 

HARD
IMPORTANT

Out of coke and CO, which is better reducing agent for the reduction of ZnO? Why?

HARD
IMPORTANT

Explain the thermodynamic principle for the interpretation of the Ellingham diagram using haematite ore.

HARD
IMPORTANT

At 673K, which is the better reducing agent carbon or carbon monoxide?

HARD
IMPORTANT

What is the minimum temperature for reduction of MgO by carbon?

HARD
IMPORTANT

Explain, how ΔG° varies, with temperature in the reaction 2C(s)+O2(g)2CO(g).

HARD
IMPORTANT

Which two parameters are plotted in Ellingham diagram.

HARD
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Carbon cannot be used to produce magnesium and calcium by chemical reduction of MgO and CaO because:

HARD
IMPORTANT

Carbon reduction of Al2O3 is not recommended as commercial process of aluminium extraction, because

HARD
IMPORTANT

Which of the following statement(s) about the Ellingham diagram is/are incorrect?