Question

Describe what happened when Ag+ combined with Na2CO3. What does this indicate?

Answer 1

Answer is: yellow precipitate (Ag₂CO₃) will form. It indicate chemical (displacement) reaction happened.

Balanced chemical reaction:

2Ag⁺(aq) + Na₂CO₃(aq) → Ag₂CO₃(s) + Na⁺(aq).

Single Displacement is reaction where  neutral element metal or nonmetal become an ion as it replaces another ion in a compound.

Ag₂CO₃ is salt, poorly soluble in water.

Freshly prepared silver carbonate is colourless, but the solid quickly turns yellow.

Answer 2

When Ag+ is combined with Na2CO3, the substances formed are Ag2CO3 and Na+. In this case, Ag performs single substitution over the element Na to form another set of substances. There are other types of reactions like double displacement, decomposition, etc.