Acids, Bases, and pH

Practice Test
      
  1.These compounds have a bitter taste and a slippery feel.  
  a.   bases  
  b.   hydrocarbons  
  c.   acids  
  d.   salts  
      
  2.Oxides of this element are usually involved in producing acid rain.  
  a.   bromine  
  b.   sulfur  
  c.   sodium  
  d.   boron  
      
  3.Acids react with active metals to produce ______________.  
  a.   chlorine  
  b.   hydrogen  
  c.   oxygen  
  d.   sulfur  
      
  4.Which of these is a product of the first step in the ionization of phosphoric acid, H3PO4?  
  a.   PO4  
  b.   H2PO4  
  c.   H3PO4  
  d.   HPO4  
      
  5.What will a nonmetallic anhydride produce in aqueous solution?  
  a.   acid  
  b.   base  
  c.   salt  
  d.   solid precipitate  
      
  6.Which of these is formed when ammonia ionizes in water?  
  a.   H3O+  
  b.   N3-  
  c.   NH2-  
  d.   NH4+  
      
  7. The reaction between nitric acid and barium hydroxide produces water and _____________.  
  a.   Ba(NO2)2  
  b.   Ba3N2  
  c.   BaNO  
  d.   Ba(NO3)2  
      
  8.Which of the following compounds is NOT a base?  
  a.   KOH  
  b.   NH3  
  c.   NaOH  
  d.   KCN  
      
  9.Nonmetal oxides are _________________.  
  a.   basic anhydrides  
  b.   acidic anhydrides  
  c.   hydrides  
  d.   nonpolar solutes  
      
  10.A pH 2 solution is ___________ times more acidic than a pH 4 solution.  
  a.   one hundred  
  b.   ten  
  c.   one million  
  d.   two  
      
  11.___________________ allow you to determine the approximate pH of a solution.  
  a.   Beakers  
  b.   Acid-base indicators  
  c.   Equations  
  d.   Anhydrides  
      
  12.Acids react with ___________ to produce carbon dioxide.  
  a.   nitrates  
  b.   sulfates  
  c.   carbonates  
  d.   phosphates  
      
  13.What is the formula for perchloric acid?  
  a.   HClO4  
  b.   HCl  
  c.   HClO3  
  d.   HClO2  
      
  14.


An aqueous solution of a weak acid contains ___________________ unionized acid molecules.
 
  a.   100%  
  b.   a low concentration of  
  c.   no  
  d.   a high concentration of  
      
  15.Which of these is neither an acid nor a base when mixed with water?  
  a.   NH3  
  b.   LiOH  
  c.   C2H6  
  d.   HI  
      
  16.A base is a substance that produces ____________ ions when it dissolves in water.  
  a.   sodium  
  b.   hydronium  
  c.   carbonate  
  d.   hydroxide  
      
  17.This substance is usually the top industrial chemical produced in the United States.  
  a.   chlorine  
  b.   ammonia  
  c.   sodium hydroxide  
  d.   sulfuric acid  
      
  18.An acid is a substance that produces ____________ ions when it dissolves in water.  
  a.   bromide  
  b.   hydroxide  
  c.   sodium  
  d.   hydronium  
      
  19.A pH of 7 is considered to be _____________.  
  a.   highly basic  
  b.   neutral  
  c.   slightly acidic  
  d.   slightly basic  
      
  20.When added to an acid, litmus is __________.  
  a.   blue  
  b.   red  
  c.   yellow  
  d.   green  
      
  21.A pH 13 solution is ______________ times more basic than a pH 9 solution.  
  a.   10  
  b.   1000  
  c.   10 000  
  d.   100  
      
  22.HC2H3O2 is a _______________ acid.  
  a.   quadprotic  
  b.   monoprotic  
  c.   diprotic  
  d.   strong  
      
  23.Which of these is formed when magnesium oxide dissolves in water?  
  a.   Mg-  
  b.   OH-  
  c.   Cl-  
  d.   H3O+  
      
  24.Which of these formulas does NOT represent a strong acid?  
  a.   HBrO  
  b.   HI  
  c.   HBr  
  d.   H2SO4  
      
  25.The pH scale is used to express the concentrations of hydronium ions and _____________ ions in aqueous solutions.  
  a.   carbon  
  b.   potassium  
  c.   hydroxide  
  d.   fluoride  
      
  26.Compared to strong acids, weak acids produce __________ ions and conduct electricity __________ efficiently.  
  a.   fewer, less  
  b.   fewer, more  
  c.   more, less  
  d.   more, more  
      
  27.Lemon juice is _______________.  
  a.   very acidic  
  b.   very basic  
  c.   neutral  
  d.   slightly basic  
      
  28.Strong bases are more _______________ than weak bases.  
  a.   molecular  
  b.   dense  
  c.   highly ionized  
  d.   nonmetallic  

 
   
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