MCQ
In which of these processes platinum is used as a catalyst
- ✓Oxidation of ammonia to form $HN{O_3}$
- BHardening of oils
- CProduction of synthetic rubber
- DSynthesis of methanol
✓
Answer
Correct option: A.
Oxidation of ammonia to form $HN{O_3}$
a
(a)Platinum acts as catalyst in the oxidation of ammonia to form nitric oxide. This reaction is used in the Ostwald’s method of nitric acid preparation
(a)Platinum acts as catalyst in the oxidation of ammonia to form nitric oxide. This reaction is used in the Ostwald’s method of nitric acid preparation
$4N{H_3} + 5{O_2}\mathop {\xrightarrow{{Pt}}}\limits_{750\,^oC} 4NO + 6{H_2}O$
$2NO + {O_2} \to 2N{O_2}$
$4N{O_2} + {O_2} + 2{H_2}O \to 4HN{O_3}$
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