Homework Help: Chemistry 114

Posted by Chenny on Monday, April 12, 2010 at 6:01am.

Write the balanced ionic equations for the following precipitations and complex forming reactions:

a) AgNO3 solution + copper sulphate solution

b) copper sulphate solution + lead nitrate solution

c)CoCl2 solution + conc. HCl

d) Zinc chloride solution + NaOH solution, added slowly until excess

e)Ni(NO3)2 solution + NH3 solution, added slowly until excess

Chemistry 114 - DrBob222, Monday, April 12, 2010 at 12:13pm
You need to know the solubility rules to predict the products of some reactions. Here is a simplified set of rules.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html

The second one is
CuSO4(aq) + Pb(NO3)2(aq) ==> PbSO4(s) + Cu(NO3)2(aq)
You turn this into an ionic equation. The others are done the same way. Probably you have learned that Zn(OH)2 is amphoteric and Ni forms the ammine with NH3.

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