Zinc reacts with NaOH solution to produce

Options

A. `O_(2)`
B. `H_(2)`
C. `NH_(3)`
D. `NO_(2)`

Answer

To determine what zinc reacts with sodium hydroxide (NaOH) solution to produce, we can follow these steps:

### Step 1: Identify the Reactants
We have two reactants:
- Zinc (Zn), which is a metal.
- Sodium Hydroxide (NaOH), which is a strong base.

**Hint:** Look for the properties of the reactants to predict the reaction.

### Step 2: Understand the Reaction Type
Zinc is a reactive metal that can displace hydrogen from both acids and bases. In this case, since sodium hydroxide is a base, zinc will react with it.

**Hint:** Metals can often displace hydrogen from acids and bases.

### Step 3: Write the Reaction
When zinc reacts with sodium hydroxide, it forms sodium zincate (Na2ZnO2) and hydrogen gas (H2). The balanced reaction can be represented as:

\[ \text{Zn} + 2 \text{NaOH} \rightarrow \text{Na}_2\text{ZnO}_2 + \text{H}_2 \]

**Hint:** Consider the products formed from the reaction of a metal with a base.

### Step 4: Identify the Products
From the reaction, we can see that one of the products is hydrogen gas (H2).

**Hint:** Look for gases that are typically produced in reactions involving metals and bases.

### Step 5: Conclusion
Therefore, when zinc reacts with sodium hydroxide solution, the gas evolved is hydrogen gas (H2).

**Final Answer:** Zinc reacts with sodium hydroxide solution to produce hydrogen gas (H2).

### Summary of Steps:
1. Identify the reactants (Zinc and Sodium Hydroxide).
2. Understand that zinc can displace hydrogen from bases.
3. Write the balanced chemical equation.
4. Identify the products of the reaction.
5. Conclude that hydrogen gas is produced.