Which substance releases hydrogen when it reacts with steam?

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Multiple Choice

Which substance releases hydrogen when it reacts with steam?

Metals that are highly reactive with water can also release hydrogen gas when they meet steam. The most straightforward example here is lithium. When steam is present, lithium reacts to form lithium hydroxide and hydrogen gas: 2 Li + 2 H2O → 2 LiOH + H2. This shows hydrogen is produced directly. Aluminum is coated with a protective oxide layer that slows or prevents reaction with steam under normal conditions; only at very high temperatures and with oxide removal does it release hydrogen, so the process isn’t as simple or immediate. Methanol reacting with steam can, in industrial settings, generate hydrogen through reforming, but that requires specific catalysts and conditions and isn’t a direct, simple reaction like the metal with steam. Hydrogen sulfide doesn’t release hydrogen simply by reacting with steam in typical conditions. So lithium is the substance that releases hydrogen when it reacts with steam.

Metals that are highly reactive with water can also release hydrogen gas when they meet steam. The most straightforward example here is lithium. When steam is present, lithium reacts to form lithium hydroxide and hydrogen gas: 2 Li + 2 H2O → 2 LiOH + H2. This shows hydrogen is produced directly.

Aluminum is coated with a protective oxide layer that slows or prevents reaction with steam under normal conditions; only at very high temperatures and with oxide removal does it release hydrogen, so the process isn’t as simple or immediate. Methanol reacting with steam can, in industrial settings, generate hydrogen through reforming, but that requires specific catalysts and conditions and isn’t a direct, simple reaction like the metal with steam. Hydrogen sulfide doesn’t release hydrogen simply by reacting with steam in typical conditions.

So lithium is the substance that releases hydrogen when it reacts with steam.

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