Given below are two statements...|Metallurgy|JEE-Main 2023

JEE MAIN 2023

01-02-2023 S1

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature.
Reason R: CO tends to get decomposed at higher temperature.
In the light of the above statements, choose the correct answer from the options given below
a

Select the correct option:

Both A and R are correct and R is the correct explanation of A

A is not correct but R is correct

Both A and R are correct but R is NOT the correct explanation of A

A is correct but R is not correct

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\begin{aligned} & 2 \mathrm{C}(\mathrm{s})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{CO}(\mathrm{g}) \\ & \Delta_{\mathrm{L}} \mathrm{S}^{\circ} \text { is }+\mathrm{ve}, \Delta_{\mathrm{L}} \mathrm{G}^{\circ}=\Delta_{\mathrm{L}} \mathrm{H}^{\circ}-\mathrm{T} \Delta_{\mathrm{L}} \mathrm{S}^{\circ}\end{aligned}$ thus slope is negative As temperature increases $\Delta_{\mathrm{r}} \mathrm{G}^{\circ}$ becomes more negative thus it has lower tendency to get decomposed.

Question Tags

JEE Main

Chemistry

Easy

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