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MHT CET202121 Sep 2021Evening ShiftChemistryThermodynamics (C)Actual

What is the value of H - U for the formation of 2 moles of ammonia from H _ 2( ~g ) and N _ 2( ~g ) ?

Options

  1. A- RT 2
  2. BRT 2
  3. C-2 RT
  4. D2 RT

Correct answer

C. -2 RT

Step-by-step solution

aligned & N _ 2( ~g ) +3 H _ 2( ~g ) 2 NH _ 3( ~g ) & H - U = n _ g RT & n _ g =[ Sum of stoichiometric coefficients of gaseous products] & -[ Sum of stoichiometric coefficients of gaseous reactant] & n _ g =2-1-3=-2 & H - U -2 RT aligned

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