The equation 2Hg(SCN)2 -> 2HgS + 2SCN + 2O2

  1. Detailed information about the equation 2Hg(SCN)2 -> 2HgS + 2SCN + 2O2 ->
    This equation describes the decomposition of the chemical compound Mercury(II) Thiocyanate (Hg(SCN)2). When heated, it decomposes to create Mercury(II) sulfide (HgS), Cyanogen (SCN)2, and Oxygen (O2).

  2. Reaction Conditions
    This reaction occurs when 2Hg(SCN)2 is heated.

  3. Reaction Process
    When heated, 2Hg(SCN)2 decomposes to create 2HgS, 2SCN, and 2O2. This reaction can be described as follows:

2Hg(SCN)2 -> 2HgS + 2SCN + 2O2 ->

  1. Observed Phenomenon
    When this reaction takes place, we would observe a unique phenomenon known as the “Pharaoh’s Serpent”. When 2Hg(SCN)2 is heated, it decomposes and creates a large solid mass of brownish-black substance containing HgS. The other gases are released causing the solid mass to expand and elongate, creating an image resembling a serpent “hatching” from the reaction bowl.

Leave a Comment