6.2- The solubility rules predict the formation of precipitates

Question 1

Solubility Rules

Answer 1

Soluble:
- All nitrates (NO₃⁻).
- All Group 1 metals
- All ammonium salys
- Most chlorides, bromides, and iodides
- Group 1 hydroxides

Insoluble:
- Most carbonates (CO₃²⁻) except Na₂CO₃, K₂CO₃.
- Most hydroxides (OH⁻) except NaOH, KOH and sulfates
- Most phosphates

Slightly Soluble:
Ca(OH)2, Ag2SO5, CaSO4

Question 2

Precipitation reactions

Answer 2

An precipitate is an insoluble solid that is formed as a part of a reaction between two ionic solutions
AB_((aq) )+CD_((aq))→ AD_((s) )+CB_((aq))