MCQ
Chlorine dioxide is best prepared by passing dry
- AChlorine gas over hot $HgO$
- BChlorine and oxygen gas over hot pt catalyst
- CHydrogen chloride and oxygen over silver oxide
- DChlorine over hot silver chlorate
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product $(A)$ is
$(I)$ $NO + Br_2 \rightleftharpoons NOBr_2 $ ........ Fast
$(II)$ $NOBr_2 + NO \rightarrow 2NOBr$ ......... Slow
The overall order of this reaction is
