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Give the example of zero order reaction. |
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Answer» Solution :Zero order reaction are relatively uncommon but they occur under special conditions. Some enzyme catalysed REACTIONS and which occur on METAL surfaces are a few examples of zero order reaction. e.g. the decomposition of gaseous ammonia on a hot platinum surface is a zero order reaction at high pressure. `2NH_(3(g))underset(1130K)underset("Pt catalyst)"toN_(2(g))+3H_(2(g))` RATE=`k[NH_(3)]^(0)=k` In this reaction platinum metal acts as a catayst.At high pressure the metal surface gets SATURATED with gas molecules .So,a further CHANGE in reaction condition is unable to alter the amount of ammonia on the surface of the catalyst making rate of the reaction independent of its concentration. e.g The thermal decomposition of HI on gold surface is another example of zero order reaction. |
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