Statement 1: Ellingham diagram is used to check which metal to be reduced by which compound
Statement 2: In Ellingham diagram as we move from left to right `DeltaS` increase

Options

A. Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of statement 1.
B. Statement 1 is true, Statement 2 is false
C. Statement 1 is flase, Statement 2 is true
D. Statement 1 is false, Statement 2 is false

Answer

To solve the question regarding the validity of the two statements about the Ellingham diagram, we will analyze each statement step by step.

### Step 1: Analyze Statement 1
**Statement 1:** "Ellingham diagram is used to check which metal to be reduced by which compound."

- The Ellingham diagram is a graphical representation that shows the temperature dependence of the stability of compounds, particularly metal oxides. It indicates the Gibbs free energy change (ΔG) for the formation of metal oxides from their respective metals.
- The primary purpose of the Ellingham diagram is to determine the feasibility of reducing metal oxides to obtain metals. It helps identify which metal oxides can be reduced by a given reducing agent (not directly which metal can be reduced).
- Therefore, this statement is **false** because it incorrectly suggests that the diagram is used to check which metal to be reduced by which compound, rather than focusing on metal oxides.

### Step 2: Analyze Statement 2
**Statement 2:** "In Ellingham diagram as we move from left to right ΔS increases."

- In the Ellingham diagram, as we move from left to right, we typically observe phase transitions of metal oxides from solid to liquid to gas.
- The transition from a solid to a liquid and then to a gas involves an increase in randomness or disorder of the system, which corresponds to an increase in entropy (ΔS).
- Since gases have higher entropy than solids or liquids, the statement that ΔS increases as we move from left to right in the Ellingham diagram is **true**.

### Conclusion
- **Statement 1:** False
- **Statement 2:** True

Thus, the correct answer to the question is that Statement 1 is false and Statement 2 is true.

### Final Answer
The correct option is **Option 3**: Statement 1 is false and Statement 2 is true.

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