Hydrogen gas is released when iron reacts with which of the following options?
Understand the Problem
The question is asking about the conditions under which hydrogen gas is released when iron reacts with various substances like water vapor and acids. It looks for the correct option among the given choices.
Answer
Water vapor at 500°C.
The final answer is Water vapor at 500°C.
Answer for screen readers
The final answer is Water vapor at 500°C.
More Information
At high temperatures, iron reacts with water vapor to release hydrogen gas and form iron(III) oxide.
Tips
A common mistake is assuming all acids will release hydrogen gas with iron; nitric acid forms a protective layer of iron nitrate.
Sources
- Iron and Water Reaction - Chegg - chegg.com
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