-Lowry base and conjegae Answer: D Question S. A loss of proton from a Brensted-Lowry acid results ina conjugate acid-base pair None of Answer Question 6. Draw the conugate base of the following compound. Question 7. For the following reaction label the acid, base, conjugate acid and and Point conjugate base. Recehved +NaOH Na +H20 Answer: Question 8. What is the parent chain of the following compound? Point Received Answer: hexane Page 2 of 5
How does a solution of pH 7 compare to a solution of pH 10?
pH 7 has more OH- ions
pH 7 is more basic
pH 7 has a higher pH
pH 7 has more H+ ions
2 points
QUESTION 4
According to the Arrhenius Theory of acids and bases, a base is:
A substance that decrease the amount of hydroxide ions present.
A substance that increases the amount of hydroxide ions present when it is dissolved in water.
A substance that increase the amount of hydrogen ions present.
A substance that increases the amount of hydrogen ions present when it is dissolved in water.
QUESTION 5
Which of the following are true regarding acid-base titrations?
They are used to determine the concentration of an unknown acid or base.
The acid or the base must be a standard solution with a known concentration
The standard solution is titrated into the chemical with the unknown concentration.
All of the above are true regarding acid-base titrations.
2 points
QUESTION 6
Which of the following is not an example of a neutralization reaction?
HCl + NaOH NaCl +H2O
2 NaOH + H2CO3 Na2CO3 +2 H2O
H2SO4 + 2 NH4OH (NH4)2SO4 + 2 H2O
2 AgNO3 + Zn 2Ag +Zn(NO3)2
QUESTION 7
Which acid base theory defines an acid as a proton donor and a base as a proton acceptor?
Arrhenius Theory
Bronsted-Lowery Theory
Conjugate Pairs Theory
Lewis Theory
2 points
QUESTION 8
The Arrhenius Theory states that acid-base reactions create a solution composed of a water and a salt. This is because mixing an acidic and basic solution together yields:
A neutral solution
A solution with a pH at or near 7
Both A and B are correct
QUESTION 9
Which of the following correctly defines a standard solution?
A solution which always has the same molecular geometry.
A solution in which the concentration is precisely known.
A solution in which the volume is precisely known.
A solution which always has different levels of solutes and solvents.
2 points
QUESTION 10
Acids naturally present in food are generally safe to eat because they are usually:
In the following molecule, which carbons are electron deficient, meaning they hold a partial positive charge (δ+) in the hybrid structure. All carbon atoms are identified by a number.
2, 4, and 6
4, 6 and 7
2, 4, 6 and 7
3, 5, and 6
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Question 31 pts
Rank the following resonance structures from most to least stable.
III (most stable) > I > II (least stable)
III (most stable) > II > I (least stable)
I (most stable) > II > III (least stable)
II (most stable) > III > I (least stable)
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Question 41 pts
Which of the following accurately depicts a Lewis acid-base reaction where a carbon is acting as the Lewis acid and an oxygen is acting as the Lewis base.
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Question 51 pts
Which of the following statements about Lewis acids and bases is true?
A Lewis base always accepts an electron pair from a Lewis acid.
The interaction between a Lewis acid and a Lewis base creates a covalent bond.
Lewis acids are also commonly called nucleophiles.
A Lewis base always accepts a proton (H+) from a Lewis acid.
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Question 61 pts
A molecular orbital energy diagram was created that contains two bonding orbitals and two antibonding orbitals. How many atomic orbitals were mixed to create all these orbitals?
6
8
4
2
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Question 71 pts
Which of the following statements about the molecular orbital diagram for H2â is false?
Two atomic orbitals combine to produce two molecular orbitals.
There is one filled bonding orbital.
There is one empty antibonding orbital.
There is a non-zero bond order.
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Question 81 pts
If a p atomic orbital and an s atomic orbital were to interact and combine to create new molecular orbitals, how many antibonding molecular orbitals would be created?
0
1
4
2
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Question 91 pts
Which of the following contains an aldehyde, an ether and an alcohol? Choose all that apply.
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Question 101 pts
Which of the following contains a carboxylic acid and an ether? Choose all that apply.