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Review - Acids & Bases

Total questions: 40

Worksheet time: 32mins

Name
Class
Date
1.

According to Arrhenius, what is the definition of an ACID?

a)

a substance that contains hydroxide and ionizes to produce OH-

b)

a substance that contains hydrogen and ionizes to produce H+

c)

a substance that contains hydrogen and ionizes to produce OH-

d)

a substance that contains hydroxide and ionizes to produce H+

2.

According to Bronsted-Lowry, what is the definition of an BASE?

a)

a substance that donates a hydrogen (H+) ion

b)

a substance that donates a hydroxide (OH-) ion

c)

a substance that accepts a hydrogen (H+) ion

d)

a substance that accepts a hydroxide (OH-) ion

3.

What is the conjugate base in the following reaction?

a)

HCO3-

b)

HCl

c)

H2CO3

d)

Cl-

4.
What is the conjugate acid in the following equation?
a)
PO43- 
b)
HNO3 
c)
NO3- 
d)
HPO42-
5.

Which of the following is an Arrhenius Acid?

a)

LiOH

b)

CO32-

c)

OH-

d)

H3PO4

6.

Which of the following is a strong acid?

a)

oxalic acid

b)

nitric acid

c)

carbonic acid

d)

acetic acid

7.

An acid....

a)

Turns light pink when phenolphthalein is added

b)

Produces H+ ions in water

c)

Turns blue when tested with litmus paper

d)

Has a pH of less than 7.

8.

Identify the acid listed below:

a)

KOH

b)

H2O

c)

H2SO4

d)

NaCl

9.

Which of the following represents an acid solution:

a)

[H+] = [OH-]

b)

[H+] greater than [OH-]

c)

[H+] less than [OH-]

d)

[OH-] greater than [H+]

10.
Strong acids and bases...
a)
do not break apart into ions (non-electrolyte)
b)
partially break apart into ions (weak electrolyte)
c)
completely break apart into ions (non-electrolyte)
d)
completely break apart into ions (strong electrolyte)
11.

Acids have a ______ pH and a _________ pOH

a)

low, high

b)

high, low

c)

An acid will not have a pOH

12.

Given the reaction above, which compound is the Bronsted-Lowry Acid?

a)

NH3

b)

HCl

c)

NH4+

d)

Cl-

13.

Given the reaction above, which compound is the Bronsted-Lowry conjugate base, if HCl is the acid?

a)

NH3

b)

NH4+

c)

Cl-

14.

Which of the following show an acid and its conjugate base pair (in that order)?

a)

H2SO4, SO42-

b)

OH-, H2O

c)

NH4+, H2O

d)

H2CO3, HCO3-

15.

Water can act as both an acid and a base according to the Bronsted-Lowry model. This means water is

a)

neutral

b)

conjugate

c)

ionic

d)

amphoteric

16.

NH3 + H2O --> NH4+ + OH-

What is NH4+ in this reaction?

a)

acid

b)

base

c)

conjugate acid

d)

conjugate base

17.

In the equation below, what is the conjugate base?

HBr + H2O ↔ Br- + H3O+

a)

HBr

b)

H2O

c)

Br-

d)

H3O+

18.

Given the equation representing a reaction:

H2CO3 + NH3 → NH4+ + HCO3-

According to Bronsted-Lowry theory, the compound NH3 acts as a base because it

a)

accepts a hydrogen ion

b)

donates a hydrogen ion

c)

accepts a hydroxide ion

d)

donates a hydroxide ion

19.

Is this acid monoprotic, diprotic or triprotic


Sulfuric Acid H2SO4

a)

Monoprotic acid

b)

Diprotic acid

c)

Triprotic acid

d)

Not an acid

20.

Complete the following reaction:

HCl + Mg(OH)2 -->

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2

21.

Which characteristics describe an acid?

a)

tastes sour, litmus indicator turns red

b)

tastes bitter, litmus indicator turns blue

c)

tastes sweet and sour, litmus indicator turns red

d)

tastes sour and bitter, litmus indicator turns blue

22.

Which characteristics describe a base?

a)

tastes sour, litmus indicator turns blue

b)

tastes bitter, litmus indicator turns blue

c)

tastes bitter sour, litmus indicator turns blue green

d)

tastes bitter sour, litmus indicator turns green

23.
Which of the following is the conjugate acid of HCO3-1?
a)
H2CO3
b)
CO3-2
c)
H2CO3-1
d)
CO3-1
24.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

25.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
26.

A Bronsted Lowry base:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

27.

A Bronsted Lowry acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

28.

In the equation below, what is the Bronsted Lowry acid (donates H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

29.

In the equation below, what is the Bronsted Lowry base (accepts H+)?

HCl + NH3 → Cl- + NH4+

a)

HCl

b)

NH3

c)

Cl-

d)

NH4+

30.

What is the conjugate acid in the following equation?

PO4-3 + HNO3 → NO3- + HPO4-2

a)

PO43-

b)

HNO3

c)

NO3-

d)

HPO42-

31.

HSO4- + H2O → H3O+ +SO42-

Identify the Bronsted Lowry Acid in the above reaction.

a)

HSO4-

b)

H2O

c)

H3O+

d)

SO42-

32.

An Arrhenius base:

a)

donates H+

b)

accepts H+

c)

produces H+

d)

produces OH-

33.

An Arrhenius acid:

a)

donates H+ to another substance

b)

accepts H+ from another substance

c)

produces H+

d)

produces OH-

34.

NaOH is:

a)

an Arrhenius base

b)

an Arrhenius acid

c)

neither an acid nor a base

d)

both an acid and a base

35.

What is the main purpose of acid-base titrations?

a)

To test if reactants react.

b)

To calculate the concentration of unknown analyte.

c)

To calculate the concentration of known analyte.

d)

To test quality of reactants.

36.

What is an equivalence point?

a)

It is the point when enough analyte has been added.

b)

It is the point when the amount of added titrant is equal to the amount of analyte in the solution.

c)

It is the point when the volume of titrant is equivalent the volume of analyte.

d)

It is the point when the concentration of titrant added is equivalent to the volume of analyte.

37.
If there is excess hydroxide ions, the solution will be...
a)
acidic
b)
basic
38.

Phenolphthalein is colourless in

a)

acid

b)

base

c)

burette

d)

a liquid

39.

Why do we perform a titration?

a)

To determine the concentration of an unknown solution

b)

To see if a reaction will occur between an acid and base

c)

To find the mass of an unknown acid

d)

To find the molar mass of an unknown solution

e)

To calculate the viscosity of the solution

40.
Which acid base pair produce the titration curve shown below?
a)
HCI + KOH
b)
HCI + NH3
c)
CH3COOH + KOH
d)
CH3COOH + NH3

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