How do you dispose of potassium hydroxide?

Answer 1

It depends on the quantity and if industrially or in the home. If you have a small amount in your home, the best way is to dilute it with large amounts of water. Then add vinegar to neutralize. It can then safely be poured down the drain and again wash with plenty of water. Industrial disposal would be different and should be sent to a waste treatment facility. Often they have large waste acid streams and the KOH is useful to them to neutralize the waste/spent acid.

Answer 2

Potassium Hydroxide is in group one on the Periodic Table, this means that it won't decompose. So you can't decompose KOH

Answer 3

Decomposition:

2 KMnO4 ----> K2MnO4 + MnO2 + O2