Brittany McLaren
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Quiz on Equilibrium + Acids and Bases, created by Brittany McLaren on 03/01/2016.

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Brittany McLaren
Created by Brittany McLaren over 8 years ago
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Equilibrium + Acids and Bases

Question 1 of 23

1

An acid is a hydrogen ion (proton) donor.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 23

1

A base is a hydrogen ion (proton) donor.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 23

1

A theory stating that, in an aqueous solution, an acid is a substance that produces hydrogen ions and a base is a substance that produces hydroxide ions.

Select one of the following:

  • Bronsted-Lowry Theory of Acids and Bases

  • Arrhenius Theory of Acids and Bases

Explanation

Question 4 of 23

1

According to the Arrhenius theory, bases in aqueous solution

Select one of the following:

  • produce H+ (aq)

  • produce OH- (aq)

  • accept H+ (aq)

  • accept OH- (aq)

Explanation

Question 5 of 23

1

Which of the following is a base according to the Bronsted-Lowry theory, but not according to the Arrhenius theory?

Select one of the following:

  • ammonia, NH3 (aq)

  • sodium hydroxide, NaOH (aq)

  • phenol, HC6H5O (aq)

  • hydrochloric acid, HCl (aq)

Explanation

Question 6 of 23

1

A conjugate acid-base pair consists of two entities that

Select one of the following:

  • differ by one oxygen atom

  • differ by one hydrogen ion

  • neutralize each other in aqueous solution

  • produce hydroxide ions in solution

Explanation

Question 7 of 23

1

Which of the following is the conjugate acid of water?

Select one of the following:

  • H2O2 (aq)

  • OH- (aq)

  • HCHO2 (aq)

  • H3O+ (aq)

Explanation

Question 8 of 23

1

Which of the following is a property of a strong acid?

Select one of the following:

  • Ka is small.

  • It exists primarily in the form of molecules in solution.

  • It ionizes completely in aqueous solution.

  • Its ionization equilibrium lies far to the left.

Explanation

Question 9 of 23

1

Able to donate or accept a hydrogen ion (proton) and thus act as both a Bronsted-Lowry acid and a Bronsted-Lowry base

Select one of the following:

  • amphiprotic

  • indicators

  • polyprotic

  • electrolytes

Explanation

Question 10 of 23

1

Which of the following best describes the components of a buffer solution?

Select one of the following:

  • a weak acid an a strong base in water

  • a weak acid and its conjugate base in water

  • a strong acid and a weak base in water

  • a neutral salt in water

Explanation

Question 11 of 23

1

Which of the following statements correctly describes the process of titration?

Select one of the following:

  • The titrant is added slowly from a burette into the sample until the equivalence point is observed.

  • The sample is added slowly from a burette into the titrant until the equivalence point is observed.

  • The sample is added slowly from a burette into the titrant until the endpoint is observed.

  • The titrant is added slowly from a burette into the sample until the endpoint is observed.

Explanation

Question 12 of 23

1

Which of the following may affect the value of K for an equilibrium reaction?

Select one of the following:

  • reaction temperature

  • whether the reaction is endothermic or exothermic

  • initial concentration of reactants

  • all of the above

Explanation

Question 13 of 23

1

The value of the equilibrium constant for a reaction allows us to predict

Select one of the following:

  • the speed of the reaction

  • the tendency for the reaction to produce products

  • the temperature at which the reaction will take place

  • the concentrations of the reactants and products

Explanation

Question 14 of 23

1

To which of the follwing types of reaction do we apply Le Chatelier's principle?

Select one of the following:

  • reversible reactions

  • all reactions at equilibrium

  • precipitation reactions

  • all chemical reactions

Explanation

Question 15 of 23

1

Adding energy to an exothermic reaction at equilibrium

Select one of the following:

  • causes a decrease in the concentration of the reactants

  • causes a decrease in the concentration of the products

  • does not affect the system

  • causes an increase in the concentration of the products

Explanation

Question 16 of 23

1

Which of the following quantities is calculated to predict in which direction an equilibrium will shift?

Select one of the following:

  • K forward

  • K reverse

  • Q

  • K

Explanation

Question 17 of 23

1

Which of the following is a base?

Select one of the following:

  • NaOH (aq)

  • NH3 (aq)

  • sodium hypochlorite, NaClO

  • all of the above

Explanation

Question 18 of 23

1

Which of the following statements is true for acids?

Select one of the following:

  • they taste bitter

  • they feel slippery

  • they turn blue litmus pink

  • all of the above

Explanation

Question 19 of 23

1

Which of the following terms describes substances that are capable of behaving as either an acid or a base?

Select one of the following:

  • diprotic

  • electrolytic

  • amphiprotic

  • conjugate

Explanation

Question 20 of 23

1

Which of the following compounds is an example of an oxyacid?

Select one of the following:

  • HF (aq)

  • HCl (aq)

  • HClO3 (aq)

  • HCN (aq)

Explanation

Question 21 of 23

1

Oxyacid - an acid in which the acidic hydrogen atom is attached to an oxygen atom

Select one of the following:

  • True
  • False

Explanation

Question 22 of 23

1

Which of the following statements correctly describes strong bases?

Select one of the following:

  • They completely dissociate in water to produce hydrogen ions.

  • They completely dissociate in water to produce hydroxide ions.

  • They only partially dissociate in water to produce hydroxide ions.

  • They only partially dissociate in water to produce hydrogen ions.

Explanation

Question 23 of 23

1

Which of the following substances would make the best electrolyte?

Select one of the following:

  • a strong acid

  • a weak acid

  • a weak base

  • an organic acid

Explanation

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