Chemistry Notes 8B Edexcel_2

Group 1 and 2 oxides react with acids in ______ reactions to form salts and water.

The solubility of Group 2 sulfates ______ down the group.

The ionic equation for the reaction of sulfate ions with barium ions is: Ba²⁺ (aq) + SO₄²⁻ (aq) → BaSO₄(s).

Limewater neutralizes excess ______ in the soil to improve crop yield.

All Group 2 sulfates are soluble in water.

• True

• False

Barium sulfate is used to detect sulfate ions because it forms a white precipitate.

• True

• False

Barium meals are poisonous because they contain barium ions.

• True

• False

Limewater reacts with carbon dioxide to form calcium carbonate.

• True

• False

What is the white precipitate formed when barium ions react with sulfate ions?

What acid is commonly added in the test for sulfate ions to prevent carbonate interference?