Which of the following is not an organic compound?

Rationale

H₂O is not an organic compound.

Water (H₂O) is classified as an inorganic compound because it does not contain carbon-hydrogen (C-H) bonds, which are characteristic of organic compounds. Organic chemistry primarily focuses on carbon-containing compounds, and while water is essential for life, it does not fall under the category of organic chemistry.

A (H₂O) CORRECT

Water lacks carbon in its molecular structure, making it an inorganic compound. Organic compounds are typically defined by the presence of carbon atoms bonded with hydrogen, and since H₂O does not meet this criterion, it is not classified as organic.

B (C₂Hâ‚†) YOUR ANSWER

C₂H₆, or ethane, is a simple organic compound composed of two carbon atoms and six hydrogen atoms, forming C-H bonds. This molecule fits the definition of an organic compound as it contains carbon and hydrogen, crucial elements in organic chemistry.

C (C₃Hâ‚‡O₂) YOUR ANSWER

C₃H₈O₂, known as glycerol, is also an organic compound. It contains three carbon atoms, eight hydrogen atoms, and two oxygen atoms, demonstrating the presence of C-H bonds that classify it as organic. Glycerol is commonly found in biological systems, further affirming its organic nature.

D (None of the above) YOUR ANSWER

This option implies that all choices listed are organic compounds. However, since H₂O is the only inorganic compound in the list, this statement is incorrect.

Conclusion

Understanding the distinction between organic and inorganic compounds is essential in chemistry. In this question, H₂O stands out as the only inorganic compound due to its lack of carbon-hydrogen bonds, whereas the other options represent valid organic compounds. This differentiation is fundamental in various fields, including biology and environmental science, where the classification impacts the study of biochemical processes.

Which of the following is not an organic compound?

H₂O is not an organic compound.

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