Ethanol can be converted to ethene which can then be changed to ethane.
Choose the correct word or phrase from the brackets to complete the following sentences:
The catalyst used in the conversion of ethene to ethane is commonly - (iron/ nickel)

Explanation

To solve the question regarding the catalyst used in the conversion of ethene to ethane, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- Ethanol (C2H5OH) can be dehydrated to form ethene (C2H4).
- Ethene can then undergo hydrogenation to form ethane (C2H6).

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