Answer to Question #31967 in Physical Chemistry for Naushin sheikh

Question

There are four substances W, X and Z. The substance W is a dark violet solid having di-atomic value. A solution of W in alcohol is used as a common anticeptic. The substance X is a white solid which is usually recovered from sea water on a large scale. The substance Z is a yet another white solid which is used in making commonly used dry cells. Please tell the 3 substance name.

Answer 1

The substance W is I₂ (Iodine). I₂ is a dark violet solid having di-atomic value. A solution of I₂ in alcohol is used as a common antiseptic. The substance X is NaCl (Sodium Chloride). NaCl is a white solid which is usually recovered from sea water on a large scale. The substance Z is NH₄Cl (Ammonium Chloride). NH₄Cl is a white solid which is used in making commonly used dry cells.