participates that forms when aqueous barium nitrate and potassium sulphate are mixed
You must mean precipitate and not participate. BaSO4 is the ppt that forms.
When aqueous barium nitrate (Ba(NO3)2) and potassium sulfate (K2SO4) are mixed, a precipitation reaction occurs. This means that a solid substance, called a precipitate, forms in the solution.
To determine the precipitate formed in this reaction, we need to use the solubility rules. Solubility rules are a set of guidelines that help us predict whether a compound will dissolve in water or form a precipitate.
For barium nitrate (Ba(NO3)2) and potassium sulfate (K2SO4), we can consult the solubility rules to see if they are soluble or insoluble in water:
- Barium compounds are generally soluble in water, except for compounds containing sulfate (SO4), carbonate (CO3), chromate (CrO4), or phosphate (PO4) ions.
- Potassium compounds are generally soluble in water, including potassium sulfate (K2SO4).
According to the solubility rules, barium sulfate (BaSO4) is insoluble in water, meaning it forms a solid precipitate when barium nitrate and potassium sulfate are mixed. The balanced chemical equation for the reaction is:
Ba(NO3)2 + K2SO4 → BaSO4 + 2KNO3
Therefore, the white precipitate formed is barium sulfate (BaSO4).