Question

Which example is a precipitation reaction?

A) Solid Fe combines with O2 gas to produce solid Fe2O3.
B) solid C6H12O6 combines with O2 gas to produce Co2 gas and H2O gas.
C) A solution of HCI mixes with a solution of NaOH to produce a solution of NaCI.
D) A solution of AgNO3 mixes with a solution of NaCI to produce solid AgCI and a solution of NaNO3.​

Answer 1

The correct answer is option D.

A solution of AgNO3 mixes with a solution of NaCl to produce solid AgCl and a solution of NaNO3.

AgNO3 + NaCl = AgCl + NaNO3

Precipitation is a kind of reaction that occur when cations and anions combine together in an aqueous solution and forms a precipitate.