(A)hydrochloric acid + silver nitrate
HCl(aq) + AgNO3(aq) -----> AgCl(s) +HNO3(aq)
(B)hydrochloric acid + sodium hydroxide
HCl(aq) + NaOH(aq) -----> NaCl(aq) + H2O(l)
(C)calcium chloride + silver nitrate
CaCl2(aq) + AgNO3(aq) ----> AgCl(s) +Ca(NO3)2(aq)
(D)sodium chloride + silver nitrate
NaCl(aq) + AgNO3(aq) ----> AgCl(s) +NaNO32(aq)
AgCl is a white precipitate.
In (B) no precipitate was formed, so answer is B.
