Question

The total number of acidic oxides from the following list is: $NO , N _2 O , B _2 O _3, N _2 O _5$, $CO , SO _3, P _4 O _{10}$

• A. 3
• B. 4
• C. 5
• D. 6

Answer 1

The Correct Option is B

To determine the number of acidic oxides from the given list, we need to understand the nature of each oxide. Acidic oxides are oxides that can react with water to form an acid or with bases to form salts.

1. \(NO\) (Nitric oxide): It is a neutral oxide. It does not react with acids or bases to form salts.
2. \(N_2O\) (Nitrous oxide): It is also a neutral oxide and does not display acidic behavior.
3. \(B_2O_3\) (Boron trioxide): This is an acidic oxide. It reacts with water to form boric acid, \(H_3BO_3\).
4. \(N_2O_5\) (Dinitrogen pentoxide): This is an acidic oxide. It reacts with water to form nitric acid, \(HNO_3\).
5. \(CO\) (Carbon monoxide): This is a neutral oxide, meaning it does not exhibit acidic properties.
6. \(SO_3\) (Sulfur trioxide): This is an acidic oxide. It reacts with water to form sulfuric acid, \(H_2SO_4\).
7. \(P_4O_{10}\) (Phosphorus pentoxide): This is another acidic oxide. It reacts with water to form phosphoric acid, \(H_3PO_4\).

Based on the above analysis, the acidic oxides in the list are:

• \(B_2O_3\)
• \(N_2O_5\)
• \(SO_3\)
• \(P_4O_{10}\)

Therefore, the total number of acidic oxides from the list is 4. The correct answer is: 4.