객관식
Which of the following is not a class of essential nutrients?
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3. Acids and Bases
Acids and Bases
객관식
Which of the following statements is true regarding the strength of acids and bases?
A
A strong acid completely dissociates in water.
B
A weak acid has a high concentration of hydrogen ions ().
C
A strong base partially dissociates in water.
D
A weak base completely dissociates in water.
검증된 단계별 안내1
Understand the concept of acid and base dissociation: A strong acid or base dissociates completely in water, meaning it releases all of its hydrogen ions (H⁺) or hydroxide ions (OH⁻) into the solution.
Identify the characteristics of a strong acid: A strong acid, such as hydrochloric acid (HCl), dissociates completely in water, resulting in a high concentration of hydrogen ions (H⁺) in the solution.
Recognize the properties of a weak acid: A weak acid, like acetic acid (CH₃COOH), only partially dissociates in water, meaning it does not release all of its hydrogen ions, resulting in a lower concentration of H⁺ compared to a strong acid.
Examine the behavior of a strong base: A strong base, such as sodium hydroxide (NaOH), dissociates completely in water, releasing all of its hydroxide ions (OH⁻) into the solution.
Understand the nature of a weak base: A weak base, like ammonia (NH₃), only partially dissociates in water, meaning it does not release all of its hydroxide ions, resulting in a lower concentration of OH⁻ compared to a strong base.
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