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AP EAMCET2006Chemistryp Block Elements (Group 15, 16, 17 & 18)

Which of the following is not correct?

Options

  1. A3 O ₂ discharge silent electric 2 O ₃ ; H=-284.5 ~kJ
  2. BOzone undergoes addition reaction with unsaturated carbon compounds
  3. CSodium thiosulphate reacts with I ₂ to form sodium tetrathionate and sodium iodide.
  4. DOzone oxidises lead sulphide to lead sulphate.

Correct answer

A. 3 O ₂ discharge silent electric 2 O ₃ ; H=-284.5 ~kJ

Step-by-step solution

The formation of ozone from oxygen is an endothermic reaction not exothermic reaction. 3 O ₂ discharge Electric 2 O ₃ H=287 ~kJ So, statement 3 O ₂ discharge silent 2 O ₃ H=-284.5 ~kJ is not correct statement.

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