Chlorides

Question 1

The chloride of a highly electropositive element can be formed by

Answer 1

Direct combination of the elements or by reacting the metal with hydrochloric acid

Question 2

What is the reaction between ionic chlorides of group 1 and water?

Answer 2

Dissolve but do not react, can be recovered unchanged by evaporating water.

Question 3

The chlorides become more covalent on the …….. side of h aperiodic table

Answer 3

Right

Question 4

What happens when the covalent chloride reacts with water?

Answer 4

The covalent chlorides are hydrolysed and white fumes of hydrogen chloride are given off. The hydrogen chloride dissolves to give an acidic solution.

Question 5

Does aluminium chloride react as a covalent molecule or an ionic compound?

Answer 5

Covalent molecule. It is hydrolysed forming white fumes of hydrogen chloride.

Question 6

What happens when aluminium chloride is heated?

Answer 6

It sublimes and in the vapour state it exists as a dimer (Al2Cl6)

Question 7

Apart from NaCl (salt which is neutral) what ph do the soluble covalent chlorides form of periods 2 and 3?

Answer 7

acidic