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NEET UG CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

1 Hard

1 of 1

Analyzing +4 | -1

Assertion: According to ellingam diagram

\mathrm{FeO}

can be easily reduced than

\mathrm{Cu}_2 \mathrm{O}

by carbon.

Reason:

\Delta \mathrm{G}^{\circ}

of

\mathrm{FeO}

is

-300 \mathrm{~kJ}

where as that of

\mathrm{Cu}_2 \mathrm{O}

is

-450 \mathrm{~kJ}

.

View answer and explanation

Correct option: D

If both Assertion & Reason are false

Option D is correct because both the assertion and the reason are false. Ellingham diagrams show that the

\Delta G^\circ

for the formation of FeO is less negative than that of

Cu_2O

, meaning

Cu_2O

is easier to reduce than FeO by carbon. Also, the given

\Delta G^\circ

values are incorrect.

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