Choose the correct balanced chemical equations to show the reactions of the following:
Zinc oxide and potassium hydroxide.

Options

A. `ZnO + 2KOH rarr K_(2)ZnO_(2) + H_(2)O_(2)`
B. `ZnO + 2KOH rarr K_(2)ZnO_(2) + H_(2)O`
C. `ZnO + 2KOH rarr K_(2)ZnO_(3) + H_(2)`
D. `ZnO + 2KOH rarr K_(2)ZnO_(2) + H_(2)O`

Explanation

To solve the problem of balancing the chemical equation for the reaction between zinc oxide (ZnO) and potassium hydroxide (KOH), we will follow these steps:

### Step 1: Write the Unbalanced Equation
The first step is to write the unbalanced equation for the reaction between zinc oxide and potassium hydroxide.

**Unbalanced Equation:**
\[ \text{ZnO} + \text{KOH} \rightarrow \text{K}_2\text{ZnO}_2 + \text{H}_2\text{O} \]

### Step 2: Identify the Products
When zinc oxide (ZnO), which is an amphoteric oxide, reacts with potassium hydroxide (KOH), it forms potassium zincate (K₂ZnO₂) and water (H₂O).

### Step 3: Write the Balanced Equation
Now, we need to balance the equation. The balanced equation for the reaction is:

\[ \text{ZnO} + 2 \text{KOH} \rightarrow \text{K}_2\text{ZnO}_2 + \text{H}_2\text{O} \]

### Step 4: Check the Balancing
Now, let's check if the equation is balanced:
- **Zinc (Zn)**: 1 on both sides
- **Potassium (K)**: 2 on the left (from 2 KOH) and 2 on the right (from K₂ZnO₂)
- **Oxygen (O)**: 3 on the left (1 from ZnO and 2 from KOH) and 3 on the right (2 from K₂ZnO₂ and 1 from H₂O)
- **Hydrogen (H)**: 2 on the left (from 2 KOH) and 2 on the right (from H₂O)

Since all elements are balanced, the equation is correct.

### Final Balanced Equation
Thus, the final balanced equation is:
\[ \text{ZnO} + 2 \text{KOH} \rightarrow \text{K}_2\text{ZnO}_2 + \text{H}_2\text{O} \]

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