Less effective than platinum and rhodium. In the laboratory scale, copper is used because it is cheaper element than platinum and rhodium.In industrial scale, platinum, rhodium are used as catalyst because they are very much efficient.Released nitric oxide readily converts to nitrogen dioxide,Ĭatalyst used in the oxidation of ammonia by oxygen This is a very largeĪmount of heat and it is an advantage to continue the reactions furthermore to manufacture nitric acid,īalanced equation of NH 3 + O 2 with catalyst This reaction is a exothermic reaction and it emits -904 kJ mol -1. This is the first reaction of nitric acid production. Oxidation number of nitrogen is increased from -3 to +2. If those differences can be simplified,Īmmonia and oxygen with catalyst | NH 3 + O 2 → NO + H 2OĪnd oxygen is reduced to water. Take the oxidation number differences for oxidation and reduction reactions.In the left side, there are two oxygen atoms.So make two nitrogen atoms by adding two ammonia. There are two nitrogen atoms in the right side of the reaction while right side only has one nitrogen atom in the left side.Now, we want to balance nitrogen and oxygen atoms. Balance elements which are oxidized and reduced in the reaction.Write oxidation numbers of those elements close to the each You know the oxidation numbers of each element in the reactionĪnd identified which elements oxidation numbers are changed. This is a redox reaction (oxidizing - reducing reaction).But their characteristics are so different. Balanced equation of NH 3 + O 2 without catalystīoth ammonia and nitrogen gas are colorless gases.
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