Why are some solutions seen by the human eye with specific colors, while other solutions are observed to be colorless??
The color of a solution is determined by the presence of colored substances, such as pigments or dyes, in the solution. When light passes through a solution containing colored substances, certain wavelengths of light are absorbed, while others are transmitted or reflected. The specific wavelengths of light that are absorbed by the solution determine the color that our eyes perceive.
If a solution appears colorless to the human eye, it means that it does not contain any substances that selectively absorb visible light. In other words, the solution either does not have any colored substances dissolved in it or has very low concentrations of such substances. When all visible wavelengths of light pass through the solution without being absorbed, the result is a colorless appearance.
To determine if a solution is colorless or contains specific colors, you can perform a simple observation test. Take a glass container and pour a small amount of the solution into it. Place the container on a white surface and observe the solution under white light. If the solution appears colorless, it means it does not contain any visible light-absorbing substances. If the solution appears to have a specific color, it indicates the presence of colored substances dissolved in it.