Question

1. How many of the following compounds are insoluble in water?

KC₂H₃O₂ CaSO₄ SrS AlPO₄

 

2. Which of the following is a precipitation reaction?

Zn(s) + 2 AgNO₃(aq)   2 Ag(s) + Zn(NO₃)₂(aq) 

HCl(aq) + KOH(aq) KCl(aq) + H2O(l)

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

2 LiI(aq) + Hg2(NO₃)₂(aq) Hg₂I₂(s) + 2 LiNO₃(aq)

 

3. Which of the following pairs of aqueous solutions will form a precipitate when mixed?

  K₂CO₃ + NaCl

CaS + Na₂SO₄ 

Na₂SO₄ + KOH

4. Determine the oxidation state of C in CO₃^-2.

5. Which of the following exists as a polyatomic molecule?

N

C

P

Ne

Na

6.Give the name for SnO.

  tin (I) oxide

   tin (III) oxide

   tin (II) oxide

   tin (IV) oxide

7.Write the name for FeS.

  iron (I) sulfide

   iron (I) sulfate

   iron (II) sulfate

   iron sulfide

   iron (II) sulfide

8.Acrylonitrile, C₃H₃N, is a molecule used to produce a plastic called Orlon. How many grams of acrylonitrile could be produced by reacting 583 g of propene, C₃H₆ with excess ammonia, NH₃, and oxygen?

2C₃H₆+ 2NH₃+ 3O₂  C₃H₃N + 6H₂O