Question

What happens when we try to dehydrate $MgC{l}_2\cdot 2H_{2}O$?

• A. $M{g}_{2}OC{l}_2$ is obtained
• B. $M{g}_{2}O$ is obtained
• C. $MgC{l}_2$ is obtained
• D. All of the above

Answer 1

Answer: (A)

$M{g}_{2}OC{l}_2$ is obtained

When we try to dehydrate $MgC{l}_2\cdot 2H_{2}O$, we obtain an oxychloride.
$2MgC{l}_2\cdot 2H_{2}O\to M{g}_{2}OC{l}_2+3H_{2}O+2HCl$,