AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which of the following is not correct?
- A \(3 \mathrm{O}_2 \underset{\text { discharge }}{\stackrel{\text { silent electric }}{\rightleftarrows}} 2 \mathrm{O}_3 ; \Delta H=-284.5 \mathrm{~kJ}\)
- B Ozone undergoes addition reaction with unsaturated carbon compounds
- C Sodium thiosulphate reacts with \(\mathrm{I}_2\) to form sodium tetrathionate and sodium iodide.
- D Ozone oxidises lead sulphide to lead sulphate.
Answer & Solution
Correct Answer
(A) \(3 \mathrm{O}_2 \underset{\text { discharge }}{\stackrel{\text { silent electric }}{\rightleftarrows}} 2 \mathrm{O}_3 ; \Delta H=-284.5 \mathrm{~kJ}\)
Step-by-step Solution
Detailed explanation
The formation of ozone from oxygen is an endothermic reaction not exothermic reaction. \(3 \mathrm{O}_2 \underset{\text { discharge }}{\stackrel{\text { Electric }}{\longrightarrow}} 2 \mathrm{O}_3 \quad \Delta H=287 \mathrm{~kJ}\) So, statement…
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