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AIIMS2003ChemistryThermodynamics (C)

Assertion : H and E are almost the same for the reaction, N _ 2( ~g ) + O _ 2( ~g ) 2 NO ( g . Reason : All reactants and products are gases.

Options

  1. AIf both assertion and reason are true and the reason is the correct explanation of the assertion
  2. BIf both assertion and reason are true and the reason is not the correct explanation of the assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

B. If both assertion and reason are true and the reason is not the correct explanation of the assertion

Step-by-step solution

H= E+ n R T n= change in number of moles of products and reactant species. aligned & N _ 2(g) + O _ 2(g) 2 NO _ (g) n= & 2-2=0 H= & E+0 R T or, H= E . aligned

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