Which is false about `H_2O_2`?

Options

A. acts both as an oxidising and reducing agent.
B. Two `-OH` bonds lie in the same plane.
C. Pale blue liquid.
D. Can be oxidised by `O_(3)`

Explanation

To determine which statement about hydrogen peroxide (H₂O₂) is false, let's analyze each statement step by step.

### Step 1: Analyze the first statement
**Statement:** H₂O₂ acts as both an oxidizing and reducing agent.

**Explanation:** This statement is true. Hydrogen peroxide can act as an oxidizing agent by accepting electrons and being reduced, and it can also act as a reducing agent by donating electrons and being oxidized.

### Step 2: Analyze the second statement
**Statement:** The two OH bonds lie in the same plane.

**Explanation:** This statement is false. In the structure of hydrogen peroxide, the two hydroxyl (OH) groups do not lie in the same plane. The molecule has a non-planar, open-book structure where the two hydrogen atoms are positioned in different planes.

### Step 3: Analyze the third statement
**Statement:** H₂O₂ is a pale blue liquid.

**Explanation:** This statement is true. Hydrogen peroxide is indeed a pale blue liquid when in its pure form.

### Step 4: Analyze the fourth statement
**Statement:** H₂O₂ can be oxidized by O₃ (ozone).

**Explanation:** This statement is true. Ozone can oxidize hydrogen peroxide, leading to the formation of oxygen and water. The reaction involves the transfer of electrons, confirming that H₂O₂ can be oxidized by ozone.

### Conclusion
After analyzing all the statements, the only false statement is the second one, which claims that the two OH bonds lie in the same plane.

### Final Answer
The false statement about H₂O₂ is: "The two OH bonds lie in the same plane."

---