THE ANSWER OF ELECTROLYTES AND NON-ELECTROLYTES QUIZ Part IV

QUIZ FOR YOU

1.    The correct ionization of calcium hydroxide(aq) is ....

a.    KOH(aq) à K⁺(aq) + OH^-(aq)

b.    K(OH)₂(aq)àK⁺(aq) +2OH^-(aq)

c.    Ca(OH)₂(aq)àCa²⁺(aq)+2OH^-(aq)

d.    Ca(OH)₂(aq) à Ca²⁺(aq)+ OH^2-(aq)

e.    CaOH(aq) à Ca⁺(aq) + OH^-(aq)

2.    Electrolytes commonly exist as solutions of ….

1.    acids          2. bases           3.salts

a.    1 only                   

b.    1 and 2

c.    2 only                  

d.    1, 2, and 3            

e.    3 only

3.    If a substance is dissolved in water and the bulb doesn’t lights and there is a few bubles, the possible substance is ….

a.    salt                        

b.    sucrose

c.    glucose                 

d.    CO(NH₂)₂

e.    CH₃COOH

4.    K₂SO₄ is a strong electrolyte because it is ….

a.    a base

b.    an acid

c.    a strong base

d.    a strong acid

e.    a salt                     

5.    The correct ionization of a weak electrolyte is ….

a.    HCl(aq) à H⁺(aq) + Cl^-(aq)

b.    NaCl(aq) à Na⁺(aq) + Cl^-(aq)

c.    NaOH(aq) à Na⁺(aq) + OH^-(aq)

d.    CH₃COOH «CH₃COO^-(aq)+H⁺(aq)

e.    CO(NH₂)₂(aq)«CO^2-(aq)+2NH₂^2-(aq)

6.    Acetic acid and sodium hydroxide are …

a.    weak electrolytes

b.    strong electrolytes

c.    non electrolytes

d.    strong electrolyte and non electrolyte

e.    weak electrolyte and strong electrolyte   

7. Acid, base, and salt are electrolytes because ....

a.    they contain ions

b.    they have charge

c.    in water, they forms ions

d.    they can dissolve into water

e.    they are unsable compounds

8. Salt can conduct electricity , when it acts as ....

a.    solid

b.    solid or liquid

c.    solid or solution

d.    liquid or solution

e.    liquid and aqueous solution

9. When sodium chloride is dissolved into water, the bulb doesn’t light, but there is a few bubles. The reason of this evidence is ....

a.    the solution is too concentrated

b.    the salt doesn’t dissolve

c.    the salt cannot dissociate

d.    the water is dirty

e.    the water is too cold

10. If you dissolve a salt and the solution is too concentrated, so there is an evidence that ....

a.    the salt cannot dissociate

b.    all ions are not freely moving

c.    the number of ions is too many  

d.    some cations and anions polarize

e.    the ions of the salt cannot be separated

11. In the electrolyte solution, the positive ions and negative ions can polarize one of another because ....

a.    The ions can attract one of another

b.    The ions couldn’t attract with water

c.    the water couldn’t cover all ions

d.    the solvation isn’t perfect

e.    there is no solvation

12. When sodium oxide is dissolved into water, the result is a solution of sodium hydroxide. The correct answer about this result is ....

a.    Its formula is Na(OH)₂

b.    there is a precipitation of NaOH

c.    it can be grouped as a strong base

d.    It can be classified as a weak electrolyte

e.    some particles in the solution are ions

13. All substances which dissolve into water will form strong electrolytes are ....

a.    metane, alcohol, calcium sulfate

b.    hydrogen chloride, hydrogen sulfide, tetrachloro metane

c.    acetic acid, citric acid, oxalic acid

d.    potassium oxide, hydrogen chloride, sodium hydroxide

e.    ammonia, calcium chloride, carbon dioxide