BiCl3 can be reduced to metallic bismuth by: — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Identify the colors of each of the transition metal sulfides listed in the options. Step 2: CdS is yellow, PbS is black, and SnS is brown. Step 3: Zinc sulfide (ZnS) is unique among common heavy metal sulfides for being white. Thus, the correct option is (c).