Question

Anhydrous $Mg{Cl}_2$ can be prepared by heating $Mg{Cl}_2\cdot 6H_{2}O$ :

• A. In a current of dry $HCl$ gas
• B. With carbon
• C. Until it fuses
• D. With lime

Answer 1

The correct option is A In a current of dry $HCl$ gas

$Mg{Cl}_2\cdot 6H_{2}O+HCl\left(drygas\right)\to MgC{l}_2+6H_{2}O$
So anhydrous $Mg{Cl}_2$ can be prepared by heating $Mg{Cl}_2\cdot 6H_{2}O$ In a current of dry $HCl$ gas
Hence option A is correct.