WAEC - Chemistry (2005 - No. 35)
Which of the following pairs of solutions will produce a precipitate when mixed?
Pb(NO3)2(aq) and NaCI(aq)
MgSO4(aq) and HCI(aq)
ZnCI2(aq) and NaSO4(aq)
NaOH(aq) and HNO3(aq)
คำอธิบาย
\(Pb(NO_3)_{2(aq)} + 2NaCl → PbCl_2 + 2NaNO_3\) Option A will produce insoluble lead(II) chloride.( precipitate)