Golden Rain Growing crystals of lead iodide Chemical reaction

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Hello, everyone. Today we will conduct a very beautiful experiment, which chemists call golden rain . • For this experiment, we need potassium iodide and lead nitrate. • To begin let's take two flask and pour into each of them at each gram of substance. • Also, be careful with lead salts, as they are quite toxic. • Once we poured gram substances into flasks pour then into each flask 175 ml of hot water. • The water should be really hot, if the water is colder, the experiment may fail. • Potassium iodide dissolves well and lead nitrate solution becomes cloudy. • This is due to a process called hydrolysis. • To prevent it, add a little of acetic acid to the solution. • Once everything is dissolved, take a large beaker and merge back our solutions. • If solutions were cold, then a fine precipitate is going to form from lead iodide. • However, our solution is hot and a precipitate of lead iodide will dissolve in the hot water. • Over time, the solution cools down and out of it a beautiful flakes of lead iodide will start crystallizing. • The slower the cooling process will be the larger and more beautiful the lead iodide flakes is going to be. • This experiment looks better in a bright sunlight. • Flakes of lead iodide is a very strong reminiscent of the golden glitter, hence the name of this experiment, the golden rain. • This experiment looks very nice in the dark in the right light conditions. • music: http://audiomicro.com Facebook: / thoisoi2 • Patreon: https://www.patreon.com/Thoisoi?ty=h • Music: http://audiomicro.com

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