객관식
Why does damage to the lower respiratory system affect the body's pH balance?
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3. Water
pH Scale
Multiple Choice
A base _______:
A
Has a value of 7 on the pH scale.
B
Is a chemical that donates hydrogen ions to a solution.
C
Is a chemical that accepts hydrogen ions from a solution.
D
Has a value below 7 on the pH scale.
E
None of the above are correct.
검증된 단계별 안내1
Understand the concept of pH scale: The pH scale ranges from 0 to 14, where 7 is neutral. Values below 7 indicate acidity, and values above 7 indicate alkalinity (basicity).
Identify the characteristics of a base: A base is a substance that can accept hydrogen ions (H⁺) from a solution, which is the opposite of an acid that donates hydrogen ions.
Evaluate the given options: Analyze each statement to determine if it correctly describes a base. A base does not have a value of 7 on the pH scale, nor does it donate hydrogen ions.
Recognize the correct description: A base is indeed a chemical that accepts hydrogen ions from a solution, which aligns with the definition of a base.
Conclude with the correct answer: Based on the analysis, the statement 'Is a chemical that accepts hydrogen ions from a solution' is the correct description of a base.
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