JEE Main 202125 FebruaryMorning Shift

Exam: JEE Main
Year: 2021
Date: 25 February
Shift: Morning Shift
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

JEE Main 2021 · 25 February · Morning Shift · Chemistry · General Principles and Processes of Isolation of Metals

Ellingham diagram is a graphical representation of :

Options

A $\Delta G\text{vs}P$
B $\left(\Delta G - T \Delta S\right)vsT$
C $\Delta HvsT$
D $\Delta GvsT$

Correct answer

D. $\Delta GvsT$

Step-by-step solution

Ellingham diagram is a graphical representation of $\Delta G$ vs $T$ when metal heated with oxygen to form metal oxide.

An Ellingham diagram is a graph showing the temperature dependence of the stability for compounds. This analysis is usually used to evaluate the ease of reduction of metal oxides and sulphides.

Ellingham diagram represents change in free energy ΔG with temperature

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