2I- + Br2 ---> I2 + 2Br-
Single-replacement
Aqueous lead nitrate plus aqueous sodium iodide produce solid lead iodide and aqueous sodium nitrate.
Bromine and Potassium iodide react to form Potassium bromide and Iodine.
Pb(NO3)2(aq)+2NaI(aq)=2NaNO3(aq)+PbI2(s)
Cl2-(g) + 2I-(aq) ---------> 2Cl-(aq) + I2-(g)
Displacement scratch that it a single replacement
Single-replacement
Aqueous lead nitrate plus aqueous sodium iodide produce solid lead iodide and aqueous sodium nitrate.
Hydrogen iodide is dissociated in water.
Bromine and Potassium iodide react to form Potassium bromide and Iodine.
Pb(NO3)2(aq)+2NaI(aq)=2NaNO3(aq)+PbI2(s)
Cl2-(g) + 2I-(aq) ---------> 2Cl-(aq) + I2-(g)
In aqueous solution they would not react. They would form a solution of ferric ions, chloride ions, potassium ions, and iodide ions.
potassium
a displacement reaction
It is the Iodine dissolved in aqueous Potassium(or Sodium) Iodide
It is left as a low hazard