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Unit 12 Homework Packet Acids _ Bases

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									Unit 12 Homework Packet: Acids & Bases


  Name the following Compounds:                Write the formula for the following:
 NaCl ______________________________          Nitrogen Trifluoride        ___________
 Al2O3 _____________________________          Ammonium Sulfate             __________
 N2O5 _____________________________           Iron(III)Phosphide           __________
 CO2      ____________________________        Sodium Bicarbonate           __________
 (NH4)3PO4________________________            Carbon Tetrahydride          __________
 Fe2O3 ____________________________           Lithium Sulfide              __________
 Na2S _____________________________           Strontium Sulfate            __________
 Na2SO4 _________________________             Aluminum Hydroxide           __________




 Name the following Acids and Bases:           Write the formula for the following:
 NaOH          ____________________________    Phosphoric Acid ____________________
 H2SO4       ____________________________      Hydrofluoric Acid __________________
 H3PO4      _____________________________      Berrylium Hydroxide ____________
 LiOH      _______________________________     Sodium Hydroxide ________________
 Ba(OH)2 _____________________________         Nitrous Acid ________________________
 H2SO3 _______________________________         Carbonic Acid ______________________
 HCl ___________________________________       Acetic Acid __________________________
 KOH __________________________________        Ammonium Hydroxide ___________
 HNO2 ________________________________         Chloric Acid ________________________
 Sr(OH)2 _____________________________         Hydroiodic Acid ___________________




Unit 12 Acids & Bases 2010-2011                                               Page 1
Unit 12 Homework Packet: Acids & Bases

Reaction (Neutralization [N], Precipitation [P], and Oxidation-Reduction [O/R])
Predict the products for the following two reactions and write balanced equations:

1. Phosphoric acid and strontium hydroxide



2. Chloric acid and aluminum hydroxide



For the following reactions, write the balanced equation and identify as a Neutralization (N), Precipitation (P), or
Oxidation-Reduction (O-R) Reaction:
                                                                                                        Type of Reaction
3. Calcium chloride sodium carbonate produce calcium carbonate and sodium chloride
                                                                                                   3.

4. Lithium bromide and silver nitrate produce lithium nitrate and silver bromide
                                                                                                   4.


5. Calcium and chlorine combine to form calcium chloride
                                                                                                   5.


6. Magnesium and oxygen combine to form magnesium oxide                                            6.


Ionization and Dissociation
1. Write the ionization reaction for Hydrobromic acid.



2. Write the ionization reaction for Phosphoric acid (assuming all protons are released).



3. Write the dissociation reaction for sodium hydroxide.



4. Write the dissociation reaction for aluminum hydroxide.



pH
                           +                -11
1. Calculate the pH if [H3O ] = 7.77 x 10         M                    Acidic or Basic?____________________


                     -         +                  -3
2. Calculate the [OH ] if [H3O ] = 1.05 x 10 M                         Acidic or Basic?____________________



Unit 12 Acids & Bases 2010-2011                                                                             Page 2
Unit 12 Homework Packet: Acids & Bases

3. Calculate pH if pOH = 5.55                                           Acidic or Basic?____________________


4. Calculate pOH if pH = 6.25                                           Acidic or Basic?____________________


                      -                -11
5. Calculate pH if [OH ] = 4.35 x 10         M                          Acidic or Basic?____________________


Identify the following reactions as oxidation or reduction:




Write the individual oxidation numbers for each element in the following compounds:

Fe2O3             CO2                    Al(OH)3        PbO2            PbO             SO4 -2



REVIEW:
   1. How many liters would 3.1 moles of O2 gas occupy at STP?



    2. What is the pressure in atm exerted by a 0.5 mol sample of nitrogen gas in a 10.0 L
       container at 298 K?



    3. How many molecules of SO3 can be produced from 14.88 g of O2?
                                                   2 S + 3 O2 → 2 SO3



Unit 12 Acids & Bases 2010-2011                                                                          Page 3
 Unit 12 Homework Packet: Acids & Bases

 Molarity
 The answer for each problem is given in parentheses. YOU MUST SHOW YOUR WORK TO GET CREDIT.

 1. What is the molarity of a solution in which 2.51 mol NaCl are dissolved in 0.585 L of solution? (Ans.
    4.29 M NaCl)




 2. What is the molarity of a solution in which 0.0615 mol AgNO3 are dissolved in 0.500 L of solution?
    (Ans. 0.123 M AgNO3)



 Electrolytes
 Determine which of the following compounds are electrolytes. Write dissociation reactions for the
 electrolytes. (Only three of the compounds are not electrolytes.)

Compound          Ionic or   If ionic:    If ionic and     If electrolyte: dissociation reaction     #
                  Covalent   soluble or   soluble:                                                   of
                  ?          insoluble?   electrolyte                                                ions
                                                                       H O
CaBr2             ionic                                 
                             soluble electrolyte CaBr2   Ca2+ + 2 Br-
                                                        2
                                                                                                       3

                                                                     H O
KOH               ionic                               
                             soluble electrolyte KOH   K+ + OH-
                                                      2
                                                                                                       2

                             insolub
AgI               ionic
                             le
                                                            H2O
                                                             
                                                 Al2(SO4)3  
Al2(SO4)3         ionic      soluble electrolyte                                                       5
                                                 2Al3++3SO42-
                  covale
H2O
                  nt
                                                                             H2O
                                                         
                                                 NH4NO3   NH4+ +
NH4NO3            ionic      soluble electrolyte                                                       2
                                                 NO3-

        4.   If a compound is found to contain 34.39% zinc, 14.82% nitrogen and 50.79% oxygen. What
             would the empirical formula of this compound be?




 Unit 12 Acids & Bases 2010-2011                                                                     Page 4

								
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