Answer to Question #178611 in General Chemistry for Henry

Question

what property of hydrogen allows it to be collected by water displacement?

Answer 1

 Hydrogen is collected by downward displacement of water as it is less denser than water. Hence it comes out at the surface of water . It is insoluble in water so it does not dissolve in water. In case of displacement with air, it is not possible even if hydrogen is lighter than air (14.5 times lighter than air).