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Physical and chemical Properties of Hydrogen gas;

Answer Text:
Properties of Hydrogen
gas;
Physical properties.
1. Colourless and odourless;
2. It is insoluble in water;
3. It is less dense than air (it is the lightest gas known);
Chemical properties.
1. It has no effect on litmus paper implying that it is neutral;
2. It burns with a pop sound when mixed with air;
3. Pure hydrogen burns quietly with a blue flame producing water;
4. Hydrogen does not support combustion but it burns in air;
5. It is a reducing agent; Chemical test for hydrogen;
- When a burning splint is introduced into a gas jar full of hydrogen gas; the gas buns with a “pop sound”
Note:
- The intensity of the “pop sound” diminishes as the purity of hydrogen increases;