Instructions:  Circle the best answer for each question.

The Reagent Shelf.
These compounds are available as pure substances or in solution, as appropriate for your needs.
 

Acids	Bases	Boron	Carbon	Halogens	Hydrogen
H2SO4 H3PO4 HCl HNO3	Ca(OH)2 KOH NaOH	B(OH)3 B2O3 BF3 Na2B4O7.10 H2O NaBH4 NaBO3.4 H2O	C(s)  CaC2 CO  CO2 Na2CO3 Na2CO3 NaHCO3	Br2 Cl2 I2 KBr  KI  NaCl	CaH2 H2 LiAlH4 NaBH4

 

Metals, Metal Salts	Oxygen	Nitrogen	Phosphorus	Silicon	Sulfur
Cu Cu(NO3)2 Mg MgO MnO2 Zn Zn(NO3)2	H2O H2O2 Na2O O2 O3	KNO3 NaNO2 NH3(aq) NH3(g)	Ca3P2 H3PO3 H3PO4 P(red) P4 P4O10	Si SiCl4	H2S FeS Na2S Na2SO3 NaHSO3 S8 SO2 SO3

Nitrogen

1.  Give the Lewis structures of these molecules  NO2   N2O3  HNO3

2.  (a) What is the name of the industrial process used to make nitric acid? (b) Write the balanced equations that are involved in this process.

3.  What is the industrial process used to make ammonia?

a.  Write the balanced equation involved in this process?
b.  Describe the reaction conditions used to increase the amount of ammonia produced.
c.  List important commercial uses for ammonia.

a.  Explain the statement that this molecule is "frozen" in the atmosphere.
b.  Why was this molecule named the "molecule of the year?
c.  Draw the Lewis structure of the molecule of the year.

5.  Give the formula of the anhydride of these acids.   a.  HNO3  b.  HNO2

6.  Write the balanced equilibrium reaction of nitrogen going to dinitrogen trioxide.

a.  In the syringe experiment, describe what you saw when you rapidly increased the pressure of these gases inside the syringe.  Explainwhy.

b.  In the syringe experiment, describe what you saw when you rapidly decreased the pressure of these gases inside the syringe.  Explainwhy.

7.  Write balanced equations for these reactions at pH< 7.

a.  Cu + NO3^-   NO + Cu⁺²
b.  NO + MnO4^-   NO3^- +  Mn⁺²
c.  Mg + N2 
d.  The product of c is hydrolyzed.
e.  The airbag reaction.

8.  Draw the major resonance forms for the azide ion.  Select the best resonance form.

9.  What are explosives?

10.  What are radicals?

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