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

Phosphorus

1.  What is the structural difference between white and red phosphorus?

2.  What is the anhydride of phosphoric acid?

3.  Write the Lewis structures of two isomers of a pyroacid formed from the dehydration of three moles of phosphoric acid.

4.  What is an important lab use for P4O10?

5.  Complete and balance these reactions

a.  P4 + O2 (limited amt) 
b.  product of (a) plus water 
c.  P4 + O2 (excess amt) 
d.  product of (b) plus water 

HSO3^- + Br2   Br^- + SO4^-2

7.  Give the lewis structures of these

a.  Phosphoric acid
b.  phosphorus acid
c.  white phorus
d.  P4O6

a.  The phosphate ion
b.  phosphorus pentachloride
c.  Phosphoric acid

10.  Know the periodic table: Groups I, II, III, IV and V.  Be able to complete a blank periodic table with these elements.
 

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.