describe what happen when a piece of wet red litmus paper is passed through a hydrogen gas.
When a piece of wet red litmus paper is passed through a hydrogen gas, the paper will not undergo any noticeable change. This is because hydrogen gas does not have any acidic or basic properties that can cause a color change in litmus paper.
To explain this scientifically, litmus paper is a pH indicator that changes color depending on whether it comes into contact with an acidic or a basic solution. Red litmus paper is typically used to test for the presence of a basic (alkaline) substance. When it is moistened with water, the red litmus paper turns blue in the presence of a base.
Hydrogen gas, on the other hand, is a nonpolar covalent compound and does not dissociate into hydrogen ions (H+). Therefore, it does not have any acid or base properties. Since litmus paper reacts specifically to the presence of acidic or basic solutions, it will not change color when exposed to hydrogen gas.
To summarize, when a wet red litmus paper is passed through a hydrogen gas, there will be no observable color change as hydrogen gas does not have any acidic or basic properties.