A precipitate is a solid that forms out of solution. A common example is that of the mixing of two clear solutions: (1) silver nitrate (AgNO3) and (2) sodium chloride (NaCl): The reaction is.The precipitate forms because the solid (AgCl) is insoluble in water. That is true for all precipitates-the solids are insoluble in aqueous solutions. common example is that of the mixing of two clear solutions: (1) silver nitrate (AgNO3) and (2) sodium chloride (NaCl): The reaction is The precipitate forms because the solid (AgCl) is insoluble in water.
Liquifilm tears eye drops contain the active ingredient polyvinyl alcohol, which is a type of medicine known as an eye lubricant. It is used for the treatment of the symptoms of dry eye (such as soreness, burning, irritation or dryness) caused by your eye not producing enough tears to keep the eye wet. Tears consist of a slightly alkaline fluid that is spread across the eye by blinking.
Most OTC lubricating eye drops work by adding various tear elements that are in your eyes already, to supplement your natural tears and make your eyes more moist and comfortable. It's best to avoid decongestant eye drops for dry eye.here's an eye drop or ointment to relieve the symptoms of most eye problems  whether you have dry eyes, pink eye (conjunctivitis), red eyes or itchiness. Determining which kind of eye drop or ointment is best depends on what kind of eye condition you have: 1  Dryness.