Which of the following combinations led to a precipitation reaction?
1. sodium phosphate and sodium iodide
2. lead nitrate and nitric acid
3. silver nitrate and aluminum sulfate
4. sodium phosphate and silver nitrate

Respuesta :

(3) Silver Nitrate and Aluminium Sulfate

Explanation:

Silver nitrate and aluminium sulphate reacts to form Aluminium nitrate and silver sulfate.

The reaction is shown below:

6AgNO₃ (aq) + Al₂(SO₄)₃ (aq) → 2Al(NO₃)₃ (aq) + 3Ag₂SO₄ (S)

From the balanced equation we can see that Ag₂SO₄ or silver sulfate is the precipitate formed.

Aluminium sulfate and silver nitrate both are chemical compounds. There are many reactions that uses net ionic equation like acid-base neutralization reaction, redox reaction, double displacement reaction etc.