Question

You have been assigned a task for your science project. You need to get a solid material which forms a solution with Hydrogen.
Initially you thought it was impossible. How can a gas form a solution with a solid?!
But after watching this video, you know that -

• A. you can solidify a gas like Helium and use that to dissolve Hydrogen.
• B. Hydrogen + Oxygen = Water. You will say this proves that hydrogen can't form solutions, since it is reactive.
• C. hydrogen can form a solution with metals like Palladium.
• D. gases can't dissolve.

Answer 1

The correct option is C hydrogen can form a solution with metals like Palladium.

It is certainly not true that gases can't dissolve in solids. A good example is Hydrogen and Palladium. It is called a solution because it forms a single phase, homogeneous mixture, which is exactly the definition of a solution!

Tidbit -
There is research going on to utilize this property of Hydrogen to store it in fuel cells where a vast amount will be required in a small amount of space.