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AP EAMCET201822 Apr 2018Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Identify the correct statement from the following.

Options

  1. AO ₃, SO ₂ molecules have different shapes
  2. BThe molecular formula of pyrosulphuric acid is H ₂ ~S ₂ O ₈
  3. CIn the presence of moisture, SO ₂ acts as an oxidising agent
  4. DV ₂ O ₅ acts as catalyst in contact process

Correct answer

D. V ₂ O ₅ acts as catalyst in contact process

Step-by-step solution

(a) O ₃ and SO ₂ both have same shape. (b) Pyrosulphuric acid is H ₂ ~S ₂ O ₇ . (c) In the presence of moisture SO ₂ act as reducing agent. H ₂ O + SO ₂ SO ₃ . (d) V ₂ O ₅ act as catalyst in contact process. 2 SO ₃ V ₂ O H ₂ ~S ₂ O ₇ , i.e. ( H ₂ SO ₄ SO ₃ )

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