4.2 the nature of aqueous solution p.119

Question 1

what do aquaous solutions that conduct electricity effeciently contain

Answer 1

strong electrolytes

Question 2

what do aquaous solutions that do not conduct electricity effeciently contain

Answer 2

weak electrolytes

Question 3

what do solutions that do not conduct electricity contain

Answer 3

nonelectrolytes (disolve but do not produce ions)

Question 4

what makes a strong electrolytes, weak electrolyte or non electrolyte

Answer 4

the number of ions that are produced (ionization) (the decomposition on ions) p.120

sodium chloride produces many ions when dissolved in water, therefore strong electrolyte

Question 5

what are the classes if strong electrolytes

Answer 5

1)soluble salts
2) strong acids
3) strong bases

Question 6

classes of weak electrolytes

Answer 6

• weak acids
• weak basis

Question 7

name weak acids

Answer 7

• acetic acid (HC2H302) (one H at the beginning to differentiation acidic and not acidic hydrogen)

Question 8

name weak elecrolytes

Answer 8

• ammonium (NH3) (weak acid)
• acetic acid (HC2H302) (CH3COOH) (one H at the beginning to differentiation acidic and not acidic hydrogen)

Question 9

name non electrolytes

Answer 9

• ethanol (C2H5OH)
• sucrose (sugar) C12 H22 O11
  (molecules remain intact)

Question 10

are all ionic compounds strong eloctrolytes

Answer 10

no, some cannot disolve in water

Question 11

name strong acids

Answer 11

HCIO4 perchloric acid
HCl hydrochloric acid
HBr hydrobromic acid
HI hydroiodic acid
HNO3 nitric acid
H2SO4 Sulfuric acid

Question 12

name strong bases

Answer 12

LiOH lithium hydroxide
NaOH sodium hydroxide
KOH potassium hydroxide
Ca(OH)2 calcium hydroxide
Sr(OH)2 strontium hydroxide
Ba(OH)2 barium hydroxide
(trick with periodic table)