describe the experimental method used to prepare pure crystals of magnesium chloride from hydrochloric acid and magnesium hydroxide ​

Réponse :

Explications :

1) Pour 50 cm3 dilute hydrochloric acid into a test tube.

2) Add a small amount of magnesium ribbon to the

acid.

Fizzing is seen and the magnesium disappears.

3) Continue adding acid and stir with a spatula until

some magnesium remains.

4) There is now a residue of

magnesium.

5) Pour off the magnesium chloride solution

into an evaporating basin.

6) Heat the evaporating basin

until all the water has evaporated. 7)

Leave until crystals

form.

7) Then pat the crystals dry with writing paper.