A) \[3{{O}_{2}}\underset{\text{dishcharge}}{\overset{\text{Slient electric}}{\longleftrightarrow}}2{{O}_{3}};\Delta =-284.5\,\text{kJ}\]
B) Ozone undergoes addition reaction with unsaturated carbon compounds
C) Sodium thiosulphate reacts with \[{{\text{I}}_{\text{2}}}\]to form sodium tetrathionate and sodium iodide
D) Ozone oxidises lead sulphide to lead sulphate
Correct Answer: A
Solution :
The formation of ozone from oxygen is an endothermic reaction, not exothermic reaction. \[3{{O}_{2}}\xrightarrow[discharh]{Electric}2{{O}_{3}};\] \[\Delta H=-287\,\text{kJ}\] So, statement \[3{{O}_{2}}2{{O}_{3}};\Delta H=-284.5\,\text{kJ}\]is not correct statement.
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