Question

Choose the option correctly depicting the order of steps involved in Ostwald’s process. ​

• A. ii$\to$i$\to$ iii​
• B. ii$\to$iii$\to$ i​
• C. iii$\to$ii$\to$ i
• D. i$\to$ii$\to$ iii​

Answer 1

The correct option is B ii$\to$iii$\to$ i​

• As we have discussed before, the steps of the Ostwald process are: Catalytic oxidation of ammonia​, then oxidation of nitric oxide​, and lastly the absorption of nitrogen dioxide​.
• The correct order of steps is ii$\to$iii$\to$ i​
• Therefore, the correct option is D.