Name ___________________________________ 
                            
Types of Chemical Reactions



DIRECTIONS: Circle the answer that best completes each statement.

1. Which of the following are weak bases?
  (a) KOH
  (b) NH3
  (c) NaCl
  (d) Ca(OH)2

a,b&d			a&c			c only			b only


2. Which of the following equations are(is) incorrect?

  (a) MgCl2(s)------H20---->  Mg+1(aq) + Cl-2(aq)

  (b) Al(NO3)3(s)--------H2O------->  Al+3(aq) + 3NO3-1(aq)  

  (c) FeSO4(s)---------H20-------> Fe+1(aq) + SO4-1(aq)

  (d) NH4C2H3O2(s)--------H20--->NH4+1 + C2H3+3(aq) + O2-4(aq)

d only			a&d			b&c			a,c&d


3. 1.0 L of 0.10M NaCl contains
  (a) 0.10 moles NaCl.
  (b) 1.0 moles NaCl.
  (c) 5.8 g NaCl.
  (d) 1.0 moles of Cl- ions.

b&d			a&c			a only			b only


4. Which of the following describes the preparation of 1.0 L of a 
    0.5M solution?
  (a) Dilute 500 ml of a 1.0M solution to 1.0L.
  (b) Dilute 50 ml of a 10M solution to 1.0L.
  (c) Add 0.5 moles of solute to 1.0L of solvent.
  (d) Add enough solvent to 0.5 moles of solute to make 1.0L of solution.

a&c			b&d			a,b&c			a,b&d


5. A 0.50M solution of KMnO4 
  (a) contains virtually no ions.
  (b) is a weaker electrolyte than 0.50M NH3.
  (c) contains 0.50 moles of solvent per g of solution.
  (d) can be prepared by making a 20-fold dilution of 1.0M KMnO4.

none of			b only			a&b			c&d         
the above


6. A standard is prepared for the analysis of 2',3'-didehydro-3'-
    deoxythymidine (d4T) (C10H12N2O4, FW 224.2), an inhibitor of HIV.  A stock 
    solution is prepared by dissolving 22.4 mg of d4T in 
    50.0 mL.  A 100.0 mL aliquot (portion) of this solution 
    is diluted to a final volume of 100.0 mL. The concentration 
    of the final solution is 
  (a) 2.00 X 10-3 M
  (b) 2.00 X 10-4 M
  (c) 2.00 X 10-5 M
  (d) 2.00 X 10-6 M
	
a			b			c			d


7. When aqueous solutions of BaCl2 and Na2SO4 are mixed together,
  (a) Ba+2 ions act as spectator ions.
  (b) no precipitate forms.
  (c) Na+ ions act as spectator ions.
  (d) Barium sulfate precipitates out.

a,b&c			a&c			c&d			d only


8. Which of the following combinations of solutions will produce precipitates?
  (a) KOH and NaCl.
  (b) NaOH and Fe(NO3)3.
  (c) FeCl3 and Na2S.
  (d) NH4NO3 and MgCl2.

a,b&c			b&c			c&d			all of
									the above


9. Consider the reaction

AgNO3(aq) + KI(aq)  ------> 

Which of the following statements are true?
  (a) NO3- and I- are spectator ions.
  (b) The net ionic equation for this reaction will not contain K+(aq).
  (c) Silver iodide will precipitate out.
  (d) The net ionic equation describes a neutralization reaction.

a&b			a,b&c			b&c			all of
									the above


10. Which of the following combinations of solutions will produce a precipitate?
  (a) NH4 and AgNO3
  (b) KNO3 and Na2CO3
  (c) Cu(NO3)2 and K2SO4
  (d) Fe(NO3)3 and MgCl2

a only			a&c			a,c&d			b,c&d


11. Which of the following substances dissociate in aqueous solution to 
      produce two moles of ions per one mole of dissolved solute?
  (a) NaCl.
  (b) NaNO3
  (c) K2SO4
  (d) HClO4

a only			a&b			a,b&d			all of
											the above


12. The reaction

HCN(aq) + NaOH(aq) ------>

  (a) is a neutralization reaction.
  (b) is a precipitation reaction.
  (c) yields water.
  (d) involves CN- and Na+ as spectator ions.

b&c			a&c			b,c&d			a,c&d


13. 50 mL of 0.20M NaOH will react completely with
  (a) 50 mL of 0.10M HCl.
  (b) 100 mL of 0.10M HCl.
  (c) 50 mL of 0.10M H2SO3.
  (d) 100 mL of 0.10M H2SO3.

a&c			a&d			b&c			b&d


14. 100 mL of a 0.20M solution of HNO3 
  (a) will conduct electricity better than 100 mL of a 0.20M solution of NH3.
  (b) contains 0.020 moles of NO3-.
  (c) can be neutalized by the addition of 100 mL of 0.20M KMnO4.
  (d) is basic.

all of			a&b			b,c&d			a&c
the above


15. In which of the following does nitrogen have an oxidation number of -3?
  (a) NH3
  (b) Li3N
  (c) (NH4)2HPO4
  (d) NO3

all of			b only			a&c			a,b&c
the above	


16. The oxidation state of As in the three compounds As2O3, As4, and HAsO2 are, 
    respectively,
  (a) +3, 0, +3
  (b) +3, 4, -3
  (c) +6, 0, -3
  (d) +6, 4, -3

a			b			c			d

  
17. Consider the reaction

Zn(s) + 2HCl(aq)  -----> ZnCl2(aq) + H2(g)
  
  (a) This is a neutralization reaction.
  (b) Zn is the reducing agent.
  (c) Zn is the substance oxidized.
  (d) HCl is the substance neutralized.

a&d			b&c			b only			c only


18. Consider the reaction

2 H2O2(l) -------> 2 H2O(l) + O2(g) 

  (a) H2O is the reducing agent.
  (b) O2 is the oxidizing agent.
  (c) H2O2 is the oxidizing agent.
  (d) H2O2 is the reducing agent.

a&b			b&d			a&c			c&d


19. Consider the reaction

a Cu(s) + b Ag+(aq) -------> c Cu+2(aq) + d Ag(s)

What are the values of a, b, c, and d, respectively?
  (a) 1, 2, 1, 2
  (b) 2, 1, 2, 1
  (c) 1, 1, 1, 1
  (d) 2, 1, 1, 2

a			b			c			d

20. Consider the reaction

a Cu(s) + b HNO3(aq) + c H+(aq) ------->d Cu+2(aq) + e NO2(g) 

What are the values of a, b, c, d, and e, respectively?

  (a) 2, 2, 6, 3, 3
  (b) 1, 2, 6, 3, 2
  (c) 3, 2, 6, 3, 2
  (d) 2, 2, 6, 3, 1

a			b			c			d