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

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Analyzing +4 | -1

Assertion (A): At 673 K,

{CO}

is better reducing agent for

{Fe}_2 {O}_3

than coke.

Reason (R):

\Delta G_{\left({CO}, {CO}_2\right)}

is less than

\Delta G_{({C}, {CO})}

at 673 K.

View answer and explanation

Correct option: A

Both (A) and (R) are true and (R) is the correct explanation of (A)

Option A (Both (A) and (R) are true and (R) is the correct explanation of (A)) is correct because at 673K, CO is a better reducing agent than coke, and this is because the change in Gibbs free energy for CO to CO2 is more negative than that of C to CO.

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