What is the product of reaction between calcium carbide and water?

Options

A. Ethylene
B. Acetylene
C. Methane
D. Benzene

Explanation

To determine the product of the reaction between calcium carbide (CaC₂) and water (H₂O), we can follow these steps:

### Step 1: Write the Reactants
The reactants in this reaction are calcium carbide (CaC₂) and water (H₂O).

### Step 2: Identify the Reaction
When calcium carbide reacts with water, it produces acetylene (C₂H₂) and calcium hydroxide (Ca(OH)₂). The reaction can be represented as:

\[ \text{CaC}_2 + 2 \text{H}_2\text{O} \rightarrow \text{C}_2\text{H}_2 + \text{Ca(OH)}_2 \]

### Step 3: Balance the Reaction
To ensure the reaction is balanced, we can check the number of atoms of each element on both sides of the equation:
- On the left side:
- Calcium (Ca): 1
- Carbon (C): 2
- Hydrogen (H): 4 (from 2 H₂O)
- On the right side:
- Calcium (Ca): 1 (from Ca(OH)₂)
- Carbon (C): 2 (from C₂H₂)
- Hydrogen (H): 4 (2 from C₂H₂ and 2 from Ca(OH)₂)

The equation is balanced.

### Step 4: Identify the Products
The products of the reaction are:
1. Acetylene (C₂H₂)
2. Calcium hydroxide (Ca(OH)₂)

### Conclusion
The primary gas produced in the reaction between calcium carbide and water is acetylene (C₂H₂).

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