CHM 1025C Part A: Qualitative Analysis Cation Pre-Lab Report


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Write and balance the Ion Exchange Reactions for the following steps (Except 7 & 9) in Part A:

Step #3:

Lead II Nitrate (aq) + Hydrochloric Acid (aq)







Silver Nitrate (aq) + Hydrochloric Acid (aq)








Mercury I Nitrate (aq) + Hydrochloric Acid (aq) →







Step #6:

Potassium chromate (aq) + Lead Chloride (aq)






Step#7: REDOX reaction forming black Hg solid particle and white ppt on filter paper

Hg2Cl2 (s) + 2 NH3 (aq) Hg (l) + HgNH2Cl (s) + NH41+(aq) + Cl1- (aq)

White black white

Step#9: Soluble Complex Ion Formation

AgCl (s) + 2 NH3 (aq) Ag(NH3)21+(aq) + Cl1-(aq)



Calcium Nitrate (aq) + Ammonium Oxalate [(NH4)2C2O4] (aq)