Where was Sodium first discovered?
Location:
No copy-pasting

Sodium was first discovered in Britain in 1807, where a chemist named Sir Humphry Davy found it by electrolysis of caustic soda.

Explanation:

Hope this helped!

London, UK (Royal Institution)

Explanation:

Humphry Davy isolated sodium in October 1807, by reducing NaOH with Fe , a few days after isolating potassium

source: Weeks ME. The discovery of the elements. IX. Three alkali metals: Potassium, sodium, and lithium. Journal of Chemical Education. 1932 Jun;9(6):1035.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.