Question

Which reaction below will result in the formation of a precipitate?

- 2NaI (aq) + Pb(NO₃)₂ (aq)
- 2 LiNO₃ (aq) + Na₂S (aq)
- 2 NaCl (aq) + (NH₄)₂CO₃ (aq)
- 2RbNO₃ (aq) + Na₂CO₃ (aq)
- NH₄4NO₃ (aq) + KOH (aq)

Answer 1

The reaction that will result in the formation of a precipitate is 2NaI (aq) + Pb(NO₃)₂ (aq) which produces PbI₂.

Step-by-step explanation:

The reaction that will result in the formation of a precipitate is 2NaI (aq) + Pb(NO₃)₂ (aq). This reaction produces PbI₂, which is insoluble and forms a precipitate. The other reactions do not result in the formation of a precipitate.