Acid-base Reaction Quiz
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Questions and Answers
- 1.
Acids take in the proton (H+).
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Acids donate protons (H+) rather than taking them in. When an acid dissolves in water, it releases H+ ions, which can then react with other molecules. Therefore, the correct answer is false.Rate this question:
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- 2.
A _______ base is formed once the proton is donated.
Correct Answer
conjugate
ConjugateExplanation
A conjugate base is formed once the proton is donated. This is because when a proton is donated, the molecule or ion that loses the proton becomes negatively charged and is called the conjugate base. The conjugate base is formed as a result of the loss of the proton and is often the product of an acid-base reaction.Rate this question:
- 3.
Which of the following donates a proton?HCl + NaOH > H₂O + NaCl
- A.
HCl
- B.
NaOH
- C.
H₂O
- D.
NaCl
Correct Answer
A. HClExplanation
HCl donates a proton in this reaction. When HCl reacts with NaOH, the HCl molecule donates a proton (H+) to the NaOH molecule. This proton transfer results in the formation of water (H₂O) and NaCl (sodium chloride).Rate this question:
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- 4.
When a proton gets donated into water, it is accepted by that water.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
When a proton is donated into water, it means that a hydrogen ion (H+) is transferred to a water molecule. Water has the ability to accept protons due to its polar nature and the presence of lone pairs of electrons on oxygen atoms. This acceptance of protons by water is what allows it to act as a solvent for many substances and participate in various chemical reactions. Therefore, the statement "When a proton gets donated into water, it is accepted by that water" is true.Rate this question:
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- 5.
H₃O+ is which of the following in this reaction?HCl + H₂O > H₃O+ + Cl
- A.
Bronsted Lowry Acid
- B.
Bronsted Lowry Base
- C.
Conjugate Acid
- D.
Conjugate Base
Correct Answer
C. Conjugate AcidExplanation
In this reaction, H₃O+ is formed by accepting a proton (H+) from HCl, making it the conjugate acid. A conjugate acid is formed when a base accepts a proton. In this case, H₂O acts as the base and accepts a proton from HCl, forming H₃O+.Rate this question:
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- 6.
Cl is which of the following in this reaction?HCl + H₂O > H₃O+ + Cl
- A.
Bronsted Lowry Acid
- B.
Bronsted Lowry Base
- C.
Conjugate Acid
- D.
Conjugate Base
Correct Answer
D. Conjugate BaseExplanation
In this reaction, Cl is the conjugate base. This is because it is the species that remains after the HCl donates a proton to water, forming the H₃O+ ion. The Cl ion has gained an electron and has a negative charge, making it the conjugate base of the acid HCl.Rate this question:
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- 7.
HCl is which of the following in this reaction?HCl + H₂O > H₃O+ + Cl
- A.
Bronsted Lowry Acid
- B.
Bronsted Lowry Base
- C.
Conjugate Acid
- D.
Conjugate Base
Correct Answer
A. Bronsted Lowry AcidExplanation
In this reaction, HCl donates a proton (H+) to water, forming the hydronium ion (H₃O+). According to the Bronsted-Lowry acid-base theory, an acid is a substance that donates a proton. Therefore, HCl is acting as an acid in this reaction by donating a proton to water.Rate this question:
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- 8.
H₂O is which of the following in this reaction?HCl + H₂O > H₃O+ + Cl
- A.
Bronsted Lowry Acid
- B.
Bronsted Lowry Base
- C.
Conjugate Acid
- D.
Conjugate Base
Correct Answer
B. Bronsted Lowry BaseExplanation
In this reaction, H₂O acts as a proton acceptor by accepting a proton from HCl to form H₃O+. According to the Bronsted-Lowry theory, a base is a substance that accepts a proton, and since H₂O is accepting a proton in this reaction, it is considered a Bronsted-Lowry base.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
Nov 08, 2015Quiz Created by
Dlindo28