Chemistry-
General
Easy

Question

Assumeacreactioicarried out in an open container. Fowhich reactiowill DH=DE?

  1. H(g)+Br(g)→2HBr(g)    
  2. C(s)+2HO(g)→2H(g)+CO(g)    
  3. PCl5(g)→PCl3(g)+Cl2(g)    
  4. 2CO(g)+O2(g)→2CO2(g)    

The correct answer is: H(g)+Br(g)→2HBr(g)

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