2.2 - Group 2

Question 1

Why is it very difficult to extract Titanium from its ores?

Answer 1

Reduction of Ti with Carbon produces brittle Titanium Carbide

Question 2

How is Titanium(IV) Chloride formed from the Titanium Oxide ore?

Answer 2

Reacted with Cl & C

TiO₂ + 2Cl₂ + C |> TiCl₄ + 2CO

Question 3

How is Titanium produced from Titanium(IV) Chloride?

Answer 3

Reduced with Magnesium

TiCl₄ + 2Mg |> Ti + 2MgCl₂

Question 4

Use of Ca(OH)₂ (slaked lime)?

Answer 4

Neutralises Acidic Soils

Question 5

Test of solubility of group 2 sulfates?

Answer 5

Add Sulfuric acid to solutions of group two ions, observe precipitates

Question 6

What is the test for sulfates?

Answer 6

Place a small amount of dissolved sample in a test tube
Add nitric acid to remove carbonates
Add a few drops of BaCl₂
White ppt = SO₄²⁻

Question 7

What is the test for solubility of Group 2 Hydroxides

Answer 7

Add NaOH(aq) to solutions of the group 2 ions
Observe precipitates