Precipitation Reactions Help Please??

Question

Can someone please help me with these three chemical reactions?

I have to answer ten and I at least need to understand the first three before I can do everything else on my own.

Please help!

What's the product, precipitate, spectator ions and net ionic equation?

1) K2CrO4 + Pb(NO3)2 --> ?

2) Hg2(NO3)2 + K2SO4 -->

3) FeCl3 + NaOH -->

----

Thanks! =P

Answer 1

2 KNO3 + PbCrO4 (s)

K+ , NO3- spectators

net ionic

CrO42- +Pb2+ >> PbCrO4 (s)

Hg2SO4 + 2 KNO3

K+ , NO3- spectators

2 Hg+ + SO42- >> Hg2SO4 (s)

Fe(OH)3 + 3 NaCl

Na+ , Cl- spectators

3 OH- + Fe3+ >> Fe(OH)3 (s)