The Scott test is a presumptive, qualitative colorimetric test for the presence of cocaine that is carried out in the laboratory or on the field. It consists of 3 steps;
Suspected substance is mixed with cobalt thiocyanate in an aqueous/glycerin solution.
Acidification of the resulting solution using HCl.
Extraction of substance's precipitate using chloroform
<em>Blue organic phase indicates the presence of cocaine in substance while colourless organic phase indicates the absence.</em>
Explanation: Alkali Earths or Group II has an ionization charge of a + 2. Alkali Metals have a ionization a + 1. Halogens or cold elements have a ionization of a +3.
I think it's Sodium Sulfide, because Na2S contains one Sodium and two Sulfur. Plus Sulfide<span> is used to describe any of three types of chemical compounds that contain sulfur.</span>
