객관식
Which of the following is a weak acid in water?
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17. Acid and Base Equilibrium
Acids Introduction
객관식
Which of the following compound(s) cannot be classified as an acid?
A. H2S
B. HCN
C. H2
D. C2H6
E. All are acids
A
A and B
B
A and C
C
C and D
D
B and C
E
All are acids
검증된 단계별 안내1
Step 1: Understand the definition of an acid. According to the Brønsted-Lowry theory, an acid is a substance that can donate a proton (H⁺ ion) to another substance.
Step 2: Analyze each compound to determine if it can donate a proton. Start with H₂S. This compound contains hydrogen and can potentially donate a proton, classifying it as an acid.
Step 3: Examine HCN. This compound also contains hydrogen and can donate a proton, making it an acid.
Step 4: Consider H₂. Although it contains hydrogen, it is a diatomic molecule and does not readily donate a proton under normal conditions, so it is not classified as an acid.
Step 5: Evaluate C₂H₆ (ethane). This compound is a hydrocarbon and does not have a hydrogen atom that can be easily donated as a proton, so it cannot be classified as an acid.
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