Problem: Which of the following is a precipitation reaction?a) Zn (s) + 2 AgNO3 (aq)      →       2 Ag (s) + Zn(NO 3) 2 (aq)b) 2 LiI (aq) + Hg 2(NO3)2 (aq)      →       Hg 2I2 (s) + 2 LiNO3 (aq)c) HCl (aq) + KOH (aq)      →       KCl (aq) + H  2O (l)d) NaCl (aq) + LiI (aq)      →       NaI (aq) + LiCl (aq)e) None of the above. 

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Which of the following is a precipitation reaction?

a) Zn (s) + 2 AgNO3 (aq)      →       2 Ag (s) + Zn(NO 32 (aq)

b) 2 LiI (aq) + Hg 2(NO3)2 (aq)      →       Hg 2I2 (s) + 2 LiNO3 (aq)

c) HCl (aq) + KOH (aq)      →       KCl (aq) + H  2O (l)

d) NaCl (aq) + LiI (aq)      →       NaI (aq) + LiCl (aq)

e) None of the above.