Question

Match the following in column A with the correct answer from the choices given in column B:

1. Ammonium hydroxide solution	(i) Contains only ions
2. Dilute hydrochloric acid	(ii)Contains only molecules
3. Carbon tetrachloride	(iii) Contains ions and molecules

Answer 1

1.Ammonium hydroxide solution –​
(iii) contains ions and molecules​

• Ammonium hydroxide (NH4OH) solution is a weak electrolyte so it contains both molecules and ions.​

2. Dilute hydrochloric acid – ​
(i) Contains only ions​

• Dilute hydrochloric acid is a strong electrolyte so the solution contains only ions.​

3. Carbon tetrachloride – ​
(ii) Contains only molecules​

• Carbon tetrachloride CCl4 is a covalent compound which is a non-electrolyte that does not dissociate into ions.​ ​