Total number of acidic oxides among $\mathrm{N}_{2} \mathrm{O}_{3}, ~ \mathrm{NO}_{2}, ~ \mathrm{~N}_{2} \mathrm{O}, ~ \mathrm{Cl}_{2} \mathrm{O}_{7}, ~ \mathrm{SO}_{2}, ~ \mathrm{CO}, ~ \mathrm{CaO}, ~ \mathrm{Na}_{2} \mathrm{O}$ and NO is \_\_\_\_.

JEE Main · 2023 · 29 Jan 2023 · Shift 2 · p-Block Elements

Total number of acidic oxides among

N_{2} O_{3}, NO_{2}, N_{2} O, Cl_{2} O_{7}, SO_{2}, CO, CaO, Na_{2} O

and NO is ____.

Answer: 4

Solution

Acidic oxides are oxides of non-metals that give oxoacids with water or salts with bases. Among those listed, dinitrogen trioxide gives nitrous acid, nitrogen dioxide gives a mixture of nitrous and nitric acids, dichlorine heptoxide gives perchloric acid, and sulphur dioxide gives sulphurous acid, so these four are acidic. Dinitrogen oxide, carbon monoxide and nitric oxide are neutral oxides, while calcium oxide and sodium oxide are basic. The number of acidic oxides is four.

JEE Main · 2023 · 29 Jan 2023 · Shift 2 · Integer answer

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