Question

Question: Choose the correct option for the statements given below.

Statement-I: Ellingham diagram is used to check which metal compound is to be reduced by which reducing agent.

Statement-II: In the Ellingham diagram, as we move from left to right[Equation] increases.

• A. a. Both S-I and S-II are true
• B. b. S-I is true, but S-II is false
• C. c. S-I is false, but S-II is false
• D. d. Both S-I and S-II are false

Answer 1

The correct option is B

b. S-I is true, but S-II is false

S1: Ellingham diagram is used to check which metal oxide is to be reduced by which compound.

Explanation- graph of metal that lies below in the Ellingham diagram has more affinity toward oxygen by this we can predict which metal oxide can be reduced by using the particular diagram Hence, the statement is true.

S2: In the Ellingham diagram, as we move from left to right[Equation] increases.

Explanation- As the slope of the Ellingham diagram is equal to $-∆\mathrm{S},$ the Ellingham diagram contains a straight line for which the slope is constant. when the phase is changed it gets changed. Hence, this statement is false.