The mixing of which pair of reactants will result in a precipitation reaction? A)CsI(aq)+ NaOH(aq) B)HCl(aq)+ Ca(OH)₂(aq) C)K₂SO₄(aq)+ Pb(NO₃)₂(aq) D)NaNO₃(aq)+ NH₄Cl(aq)

Question

Quizplus · Accepted Answer

In Choice C, when KI(aq) is mixed with Pb(NO3)2(aq), a precipitation reaction occurs where PbI2(s) is formed. Choices A, B, and D do not involve the formation of an insoluble solid (precipitate), therefore they are not precipitation reactions.

The Mixing of Which Pair of Reactants Will Result in a Precipitation