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JEE Main201815 Apr 2018Morning ShiftChemistryThermodynamics (C)Actual

For which of the following reactions, H is equal to U ?

Options

  1. AN ₂( g )+3 H ₂( g ) 2 NH ₃( g )
  2. B2 HI ( g ) H ₂( g )+ I ₂( g )
  3. C2 SO ₂ (g) + O ₂( g ) 2 SO ₃( g )
  4. D2 NO ₂( g ) N ₂ O ₄( g )

Correct answer

B. 2 HI ( g ) H ₂( g )+ I ₂( g )

Step-by-step solution

H = U + n _ g RT aligned &2 HI ( g ) H ₂( g )+ I ₂( g ) ; n _ g =(1+1)-2=0 & H = U +0 aligned

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