Chemistry and qualitative analysis of cations:

1. Propose a separate Ag+ from solution containing Fe2+ and Sn4+
2. Use le Chatlier’s principle to predict what will happen S2in the following equation when the Phis decreased (2 points)
H2S (aq) +2H3O (aq) +S2 (aq)
3. If the application of heat causes a reaction to produce more products, is the reaction endothermic or exothermic?
Lab 8 the chemistry and qualitative analysis of cations: Group II
4. What is the net ionic equation when Cu (NO3)2(aq)?
5. A student has a yellow reside that is either SnS2 or Cds. What could be added to confirm the identity of the precipitate?
6. A student has carries out a separation scheme starting with Bi3+, Cd2+and Cu2+. At the end of the experiment, the student has blue Bi (OH) 3 solid instead of white .What is likely the problem?
Lab 9 the chemistry and qualitative analysis of cations: group III and IV
7. A solution contains either Ba2+ or Ca3+. What test could be used to determine the identity of the cation?
8. What is true about the Group IV hydroxides compared to the group III hydroxides?

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