Which of the following is known as butter of tin?

Which of the following is known as butter of tin?
  1. $\mathrm{SnCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}$
  2. $\mathrm{SnCl}_{2} \cdot 3 \mathrm{H}_{2} \mathrm{O}$
  3. $\mathrm{SnCl}_{2} \cdot 4 \mathrm{H}_{2} \mathrm{O}$
  4. $\mathrm{SnCl}_{2} \cdot 5 \mathrm{H}_{2} \mathrm{O}$

Solution

Stannic chloride $\mathrm{(SnCl4)}$ is hygroscopic and forms crystalline hydrates containing $3,5,6$, and $8$ molecules of water of crystallization. The pentahydrate $\mathrm{SnCl} 4.5 \mathrm{H} 2 \mathrm{O}$, is known as "butter of tin" or "oxymuriate of tin." It is used as a mordant for dyes. *

Asked in: JEE-TOPICTESTS-CHEMISTRY

Practice more P-BLOCK ELEMENTS GROUP 13 & 14 questions on Aicharya