My Life In My Own Words

mindblowingscience:

ertythescience:

This is so pretty

The ‘Golden Rain’ reaction is so beautiful.

It is a double replacement reaction, typically between Lead Nitrate (Pb(NO3)2)] and Potassium Iodide (KI).

The reaction is as follows:

Pb(NO3)(aq) + 2 KI (aq) -> PbI2 + 2 KNO3 (aq)

Crystals of Lead (II) Iodide are insoluble in solution, and will precipitate out of the solution. The PbI2 will form thin, yellow, hexagonal crystals as a result of this reaction. Lowering the temperature of the solution makes the compound even more insoluble.

If you ever perform this experiment, be careful; lead and its salts are toxic!

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