AnswersChemistryAcids and Bases

Practice Test Answers

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The two products that are formed when a solution of HNO sub 3 and a solution of NaOH react are water and

A
NaHNO .
B
NaHNO sub 3 .
C
NaNO sub 2 .
D
NaNO sub 3 .
2
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What do strong acids and strong bases have in common?

A
They both partially dissociate, with reverse reactions occurring.
B
They both remain intact when placed in water, with no dissociation taking place.
C
They both dissociate completely, with little or no reverse reactions.
D
They both dissociate completely, with reverse reactions constantly taking place.
3

A substance is dissolved in water and produces hydronium ions. This occurs when hydrogen ions move from the substance to associate with water molecules. Which term best matches the behavior of this substance?

A
Bronsted-Lowry acid
B
Arrhenius acid
C
Arrhenius base
D
Bronsted-Lowry base
4

Which of these equations correctly expresses the self-ionization of water?

A
cap h sub 2 cap o plus cap h sub 2 cap o left right arrow 2H sub 3 cap o raised to the plus power
B
cap h sub 2 cap o plus cap h sub 2 cap o left right arrow cap h sub 3 cap o raised to the plus plus OH raised to the negative power power
C
cap h sub 2 cap o plus cap h sub 2 cap o left right arrow 2 OH raised to the negative power
D
cap h sub 2 cap o plus cap h sub 3 cap o raised to the plus left right arrow cap h sub 2 cap o plus OH raised to the negative power power
5

What is the relationship between cap k sub A and cap k sub b with cap k sub w ?

A
The quotient of ​​​​​​​ cap k sub A and ​​​​​​​​​​​​​​ cap k sub b equals the auto-dissociation constant for water.
B
The sum of ​​​​​​​ cap k sub A and ​​​​​​​​​​​​​​ cap k sub b equals the auto-dissociation constant for water.
C
The product of ​​​​​​​ cap k sub A and ​​​​​​​​​​​​​​ cap k sub b equals the auto-dissociation constant for water.
D
The difference of ​​​​​​​ cap k sub A and ​​​​​​​​​​​​​​ cap k sub b equals the auto-dissociation constant for water.
6

How does litmus paper identify a base?

A
A base turns blue litmus red.
B
A base turns orange litmus red.
C
A base turns yellow litmus blue.
D
A base turns red litmus blue.
7

What is the Arrhenius definition of a base?

A
A compound that donates protons.
B
A compound that accepts protons.
C
A substance that increases cap h sub 2 cap o raised to the plus power concentration when it is dissolved in water.
D
A substance that increases OH raised to the negative power concentration when it is dissolved in water.
8

Why is citric acid added to food?

A
to add color
B
to add tartness
C
to add bitterness
D
to add sweetness
9

Which salt is produced when NH sub 4 OH reacts with HNO sub 3 ?

A
NH sub 4 NO sub 2
B
KNO sub 2
C
NaNO sub 3
D
NH sub 4 NO sub 3
10

Which substance has the lowest open bracket cap h raised to the plus power close bracket concentration but is still considered an acid?

A
milk
B
household lye
C
gastric fluid
D
blood

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