Chemistry-
General
Easy

Question

Fowhich change ΔH≠ΔE–

  1. H2(g)+I2(g) 2HI(g) 2HI(g)    
  2. HCl(ell)+NaOH(l)→NaCl(s)+H2O(ell)    
  3. C(s)+O2(g)→CO2(g)    
  4. N2(g)+3H2(g)→2NH3(g)    

The correct answer is: N2(g)+3H2(g)→2NH3(g)

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