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[Chemical Knowledge]：What color silver phosphate

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Silver phosphate is an important and common chemical reagent, which is widely used in chemical laboratories and industrial production. It is prepared by the reaction of copper ions and silver ions, which has certain toxicity and corrosiveness. The color of silver phosphate is also a widespread concern. Let's discuss the color of silver phosphate. The color of

silver phosphate is light yellow, because the silver ions contained in the silver phosphate molecules reduce the charge and become Ag3PO4, and the absorption of light by silver ions in this compound will also change. When light hits the surface of silver phosphate, it will be partially absorbed, forming a transparent wavelength, and light in the transparent wavelength will be reflected back to form color. The color of silver phosphate is due to this reflected transparent wavelength.

However, in practical applications, the color of silver phosphate may change due to a number of factors. For example, silver phosphate will change after touching the skin, and dark brown spots may appear. This is because the silver ions in the silver phosphate molecules are reduced to black silver oxide ions, which changes the wavelength of reflected light. This change can be removed or mitigated by methods such as the use of disinfectants or hand sanitizers.

In addition, silver phosphate also exhibits different colors at different concentrations and temperatures. Silver phosphate solution appears light yellow at low concentration and room temperature, but when the concentration increases or the temperature increases, the color will gradually change to milky white. This change is also due to a change in the wavelength of the reflected light.

In general, the color of silver phosphate is light yellow, but it will change in practical applications due to some factors. Understanding these changes can help us better understand the nature and application of silver phosphate, better use it in experiments and industrial production, and prevent some accidents.

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