0 votes
4 views
in Chemistry by (117k points)
closed by
Which one of the following does not contain water in alkali crystallization?
1. Baking soda
2. Blue vitriol
3. Washing soda
4. Gypsum

1 Answer

0 votes
by (59.8k points)
selected by
 
Best answer
Correct Answer - Option 1 : Baking soda

The correct answer is Baking soda.

  • Baking soda does not contain water of crystallization.
  • The water of crystallization means having a fixed number of molecules present in one formula of a unit of salt. 
    • e.g ​Blue vitriol (CuSO4.5H20)
  • The chemical formula of baking soda is NaHCO3.
    • Its formula does not show any association with water molecules.
  • Baking soda is commercially manufactured on a large scale by the ammonia-soda Solvay process, named after Ernest Solvay, a Belgian industrial chemist.
  • Nahcolite is naturally occurring sodium bicarbonate, and is extracted by "solution mining".

  • The other three options contain water of crystallization.
    • Blue vitriol (CuSO4.5H20)
    • Washing soda (Na2CO3 .1OH2O)
    • Gypsum (CaSO4.2H20)
  • Baking soda is white amorphous powder whereas blue vitriol, and washing soda are salts.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...