Verified Solution • 2025–26 Session moderate

QNEET-2022-Ch-478: NEET 2022 Chemistry - Class 12 NEET-2022-Ch-478 Solution: Which of the following reactions is a part of the large scale…

Which of the following reactions is a part of the large scale industrial preparation of nitric acid?

Cu(NO_3)_2 + 2NO_2 + 2H_2O \xrightarrow[9\text{bar}]{500\text{K} Pt} 4HNO_3 + Cu

NaNO_3 + H_2SO_4 \xrightarrow[9\text{bar}]{500\text{K} Pt} NaHSO_4 + HNO_3

4NH_3 + 5O_2(\text{from air}) \xrightarrow[9\text{bar}]{500\text{K} Pt} 4NO + 6H_2O

4HPO_3 + 2N_2O_5 \xrightarrow[9\text{bar}]{500\text{K} Pt} 4HNO_3 + P_4O_{10}

Multiple Choice Options

A Cu(NO 3 ) 2 + 2NO 2 + 2H 2 O $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{500\,K,\,9\,bar}}^{\mathrm{Pt}}}$ 500 K , 9 bar _ Pt _ 4HNO 3 + Cu
B NaNO 3 + H 2 SO 4 $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{500\,K,\,9\,bar}}^{\mathrm{Pt}}}$ 500 K , 9 bar _ Pt _ NaHSO 4 + HNO 3
C 4NH 3 + 5O 2 (from air) $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{500\,K,\,9\,bar}}^{\mathrm{Pt}}}$ 500 K , 9 bar _ Pt _ 4NO + 6H 2 O
D 4HPO 3 + 2N 2 O 5 $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{\mathrm{500\,K,\,9\,bar}}^{\mathrm{Pt}}}$ 500 K , 9 bar _ Pt _ 4HNO 3 + P 4 O 10

Step-by-Step Verified Solution

4NH 3 + 5O 2 (from air) _ 500 K , 9 bar Pt 4NO + 6H 2 O 2NO(g) + O 2 (g) _ 2NO 2 (g) 3NO 2 (g) + H 2 O(l) _ 2HNO 3 (aq) + NO(g) This is industrial method of preparation of nitric acid.

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