Which of the following statement is incorrect?

Options

A. Metals like Cu, Ag, Au cannot diplace H from acids
B. In reactivity series metals are arranged in order of increasing reactivity
C. Silver cannot displace Cu from `Cu(NO_(3))_(2)`
D. Zince displaces Cu from `CuSO_(4)`

Answer

To determine which statement is incorrect, we need to analyze each statement provided in the question based on the principles of the reactivity series of metals.

### Step-by-Step Solution:

1. **Understand the Reactivity Series**: The reactivity series is a list of metals arranged in order of decreasing reactivity. Metals that are more reactive can displace less reactive metals from their compounds.

2. **Evaluate the First Statement**: "Metals like Copper, Ag, and Au do not displace hydrogen from acids."
- **Analysis**: Copper (Cu), Silver (Ag), and Gold (Au) are below hydrogen in the reactivity series. Therefore, they cannot displace hydrogen from acids.
- **Conclusion**: This statement is **true**.

3. **Evaluate the Second Statement**: "The reactivity series metals are arranged in order of increasing reactivity."
- **Analysis**: This statement is misleading. The reactivity series is arranged in order of **decreasing** reactivity, not increasing.
- **Conclusion**: This statement is **incorrect**.

4. **Evaluate the Third Statement**: "Silver cannot displace copper from copper(II) nitrate."
- **Analysis**: Silver is below copper in the reactivity series, meaning it is less reactive and cannot displace copper from its compound.
- **Conclusion**: This statement is **true**.

5. **Evaluate the Fourth Statement**: "Zinc displaces copper from copper(II) sulfate."
- **Analysis**: Zinc is above copper in the reactivity series, indicating that it is more reactive and can displace copper from its compound.
- **Conclusion**: This statement is **true**.

### Final Conclusion:
The incorrect statement is the second one: "The reactivity series metals are arranged in order of increasing reactivity."

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