Multiple choice

Assertion (A): Anhydrous MgCl2 cannot be prepared by direct heating of hydrated MgCl2. Reason (R): During the heating hydrolysis of MgCl2 takes place that produce MgO. Select the correct opinion.

  1. A is true, but R is false.

  2. A is false, but R is true.

  3. Both A and R are true.

  4. Both A and R are false.

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anhydrous magnesium chloride is regenerated from magnesium hydroxide or magnesium carbonate using hydrochloric acid. In order to obtain anhydrous magnesium chloride from hydrated form by heating, hydrolysis of MgCl2 takes place that produce MgO. Thus anhydrous MgCl2 cannot be prepared by direct heating of hydrated MgCl2. Hence, both A and R are true.

Keep practicing — related questions