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Question 1:

According to the Bronsted-Lowry theory, an acid is a substance that:

A) Accepts a proton (H+)
B) Donates a proton (H+)
C) Accepts an electron pair
D) Donates an electron pair

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Explanation: The correct answer is B) Donates a proton (H+). According to the Bronsted-Lowry theory, an acid is a substance that donates a proton (H+). In this theory, acids are defined as proton donors.

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Question 2:

According to the Bronsted-Lowry theory, a base is a substance that:

A) Accepts a proton (H+)
B) Donates a proton (H+)
C) Accepts an electron pair
D) Donates an electron pair

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Explanation: The correct answer is A) Accepts a proton (H+). According to the Bronsted-Lowry theory, a base is a substance that accepts a proton (H+). In this theory, bases are defined as proton acceptors.

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Question 3:

According to the Bronsted-Lowry theory, a conjugate acid-base pair consists of:

A) An acid and its salt
B) A strong acid and a weak base
C) A substance and its hydrated form
D) An acid and its corresponding base

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Explanation: The correct answer is D) An acid and its corresponding base. According to the Bronsted-Lowry theory, a conjugate acid-base pair consists of an acid and its corresponding base. When an acid donates a proton, it forms its conjugate base, and when a base accepts a proton, it forms its conjugate acid.

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Question 4:

A neutralization reaction according to the Bronsted-Lowry theory involves the combination of:

A) An acid and a base to form water and a salt
B) An acid and a metal to produce hydrogen gas
C) A base and an oxide to form a hydroxide
D) An acid and an acid to form a conjugate base

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Explanation: The correct answer is A) An acid and a base to form water and a salt. According to the Bronsted-Lowry theory, a neutralization reaction involves the combination of an acid and a base to form water and a salt. In this reaction, the acid donates a proton (H+) to the base, forming water, while the remaining ions combine to form a salt.

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Question 5:

The strength of an acid is determined by:

A) The number of protons it donates
B) The number of hydroxide ions it produces
C) The concentration of hydrogen ions it produces
D) The concentration of hydroxide ions it accepts

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Explanation: The correct answer is C) The concentration of hydrogen ions it produces. The strength of an acid is determined by the concentration of hydrogen ions (H+) it produces when it dissociates or donates protons. Strong acids completely dissociate in water, producing a high concentration of hydrogen ions, while weak acids partially dissociate, resulting in a lower concentration of hydrogenions.