A) \[3{{O}_{2}}\underset{\text{discharge}}{\overset{\text{Silent}\,\,\text{electric}}{\longleftrightarrow}}2{{O}_{3}};\,\,\Delta H=-284.5\,\,kJ\]
B) Ozone undergoes addition reaction with unsaturated carbon compounds
C) Sodium thio sulphate reacts with \[{{I}_{2}}\] 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. \[3{{O}_{2}}\xrightarrow[\text{discharge}]{\text{Electric}}2{{O}_{3}};\] \[\Delta H=-287\,\,kJ\] So, statement \[3{{O}_{2}}2{{O}_{3}};\,\,\Delta H=-284.5\,\,kJ\]is not correct statement.
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