Question

Anhydrous magnesium chloride can be prepared by heating $MgC{l}_2.6H_{2}O$:

• A. in a current of dry $HCl$
• B. with carbon
• C. until it fuses
• D. with lime

Answer 1

Answer: (A)

in a current of dry $HCl$

Anhydrous magnesium chloride can be prepared by heating $MgC{l}_2.6H_{2}O$ in the presence of dry $HCl$ gas.

$MgC{l}_2.6H_{2}O\stackrel{dryHClgas,heat}{\to }MgC{l}_2+6H_{2}O$

Option A is correct.