Questions

Explanations

21 Which process is used to determine the concentration of an acid?

(1) chromatography    (3) electrolysis

(2) distillation          (4) titration

22 The compounds CH₃OCH₃ and CH₃CH₂OH have different functional groups. Therefore, these compounds have different

(1) chemical properties

(2) gram-formula masses

(3) percent compositions by mass

(4) numbers of atoms per molecule

23 Which term identifies the half-reaction that occurs at the anode of an operating electro­chemical cell?

(1) oxidation     (3) neutralization

(2) reduction    (4) transmutation

Red Cat

Oxidation at the Anode

24 During the operation of a voltaic cell, the cell produces

(1) electrical energy spontaneously

(2) chemical energy spontaneously

(3) electrical energy nonspontaneously

(4) chemical energy nonspontaneously

Chemical to electrical energy, spontaneous

25 In which type of chemical reaction are electrons transferred?

(1) organic addition

(2) oxidation-reduction

(3) double replacement

(4) acid-base neutralization

26 A substance that dissolves in water and produces hydronium ions as the only positive ions in the solution is classified as

(1) an alcohol (3) a base

(2) an acid    (4) a salt

hydroxide....a base

27 According to one acid-base theory, a base is an

(1) H⁺ acceptor (3) Na⁺ acceptor

(2) H ⁺ donor (4) Na⁺ donor

acids donate protons (H+)

28 Which compound is an electrolyte?

(1) CCl₄            (3) C₆H₁₂O ₆

(2) CH₃OH     (4) Ca(OH)₂

alcohol is a trap....carbon with an -OH side chain

29 Which term identifies a type of nuclear reaction?

(1) fermentation   (3) reduction

(2) deposition     (4) fission

30 Which radioisotopes have the same decay mode and have half-lives greater than 1 hour?

(1) Au-198 and N-16   (3) 1-131 and P-32

(2) Ca-37 and Fe-53    (4) Tc-99 and U-233