Question

Give tests to identify hydrogen.

Answer 1

To test the presence of hydrogen the following test can be performed.

• A lighted wooden splint makes a popping sound in a test tube of hydrogen.
• A characteristic test for hydrogen (H₂) gas can be performed by bringing a burning candle near the source of hydrogen. In doing so, hydrogen gas burns with a squeaky pop sound. Hydrogen gas is recognized by the ‘pop’ when it burns.
• The ‘pop’ is the sound of a small explosion.
• Hydrogen gas is highly flammable.