Q28 / 150 · MHT CET 2025 (27 Apr Shift 2) · Chemistry
Which from following compounds is NOT acidic in nature?
- Correct answerA$\mathrm{SO}_2$
- B$\mathrm{CO}_2$
- C$\mathrm{N}_2 \mathrm{O}_5$
- D$\mathrm{N}_2 \mathrm{O}$
Solution
Oxides are classified as acidic, basic, amphoteric, or neutral. Non-metal oxides are typically acidic, though exceptions exist.
SO2 is an oxide of sulfur. It reacts with water to form sulfurous acid: $\mathrm{SO}_2(g) + \mathrm{H}_2\mathrm{O}(l) \rightarrow \mathrm{H}_2\mathrm{SO}_3(aq)$, so it is acidic.
CO2 is an oxide of carbon. It reacts with water to form carbonic acid: $\mathrm{CO}_2(g) + \mathrm{H}_2\mathrm{O}(l) \rightarrow \mathrm{H}_2\mathrm{CO}_3(aq)$, so it is acidic.
N2O5 is an oxide of nitrogen. It reacts with water to form nitric acid: $\mathrm{N}_2\mathrm{O}_5(s) + \mathrm{H}_2\mathrm{O}(l) \rightarrow 2\mathrm{HNO}_3(aq)$, so it is acidic.
N2O is also an oxide of nitrogen, but it is a neutral oxide and does not react with acids or bases, like CO and NO. Therefore, it is not acidic.
The oxide that is not acidic is $\boxed{\text{D}}$.
Hence, the correct answer is option: 'A'.