AnswersCrowley Original Credit Chemistry BNeutralization Reactions

Neutralization Reactions — Cumulative exam Answers

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Which of the following best defines an acid?

A
An acid has a pH of 7.
B
An acid has hydroxide ions.
C
An acid has fewer positive ions in solution.
D
An acid has more hydrogen ions in solution.
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Consider the reaction below.HClO3 + NH3 NH4+ + ClO3–Which is a base-conjugate acid pair?

Question illustration
A
NH3 and ClO3–
B
NH3 and NH4+
C
HClO3 and NH3
D
HClO3 and NH4+
43

Which reaction is an example of heterogeneous catalysis?

A
Ethene gas reacts with hydrogen gas by using a nickel catalyst.
B
Hydrogen peroxide decomposes by using an aqueous iodide ion catalyst.
C
Formic acid decomposes by using an acidic catalyst.
D
Sulfur dioxide gas is converted to sulfur trioxide gas by using nitrogen chloride gas.
44

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below.MgO(s) + 601.7 kJ Mg(s) + ½O2(g)Which factor plays the most important role in allowing this reaction to occur?

Question illustration
A
temperature
B
concentration
C
pressure
D
surface area
45

Which statement about the self-ionization of water is correct?

A
Two water molecules interact to form a water molecule and a hydroxide ion.
B
Two water molecules interact to form a hydronium ion and a hydroxide ion.
C
Two water molecules interact to form two hydronium ions.
D
Two water molecules interact to form two hydroxide ions.
46

Which topic is commonly used to explain activation energy and how chemical reactions happen?

A
reaction rate
B
collision theory
C
velocity distribution
D
spontaneous reaction
47

Which statement defines activation energy?

A
It is the sum of the maximum energy and reactant energy.
B
It is the sum of the product energy and reactant energy.
C
It is the difference between reactant energy and maximum energy.
D
It is the difference between product energy and reactant energy.
48

Which would most likely be the pH of a highly-corrosive acid?

A
1
B
5
C
8
D
11
49

Consider the energy diagram below.xn.Which line indicates a higher reaction rate?

Question illustration
A
A because it has a lower activation energy.
B
B because it has a lower activation energy.
C
A because its Grxn is much lower.
Option C
D
B because its Grxn is much lower.
Option D
50

What is the pH of a solution with [H+] = 1.25 10–10 M?Use .

Question illustration
A
–10.1
B
–9.90
C
7.90
D
9.90

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