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Chemistry-

Thfollowing are thheats oreactions-
iHOofHO(l)=68.3Kcalmol1
iiHO comb ofC2H4 =337.2Kcalmol1
iii) ΔHO comb ofC2H4 =363.7Kcalmol1Then heat change for the reaction
C2H2+H2→C2H4is-</span

Chemistry-General

  1. 716.1Kcal    
  2. +337.2Kcal    
  3. 41.8Kcal    
  4. 579.5Kcal    

    Answer:The correct answer is: –41.8Kcal

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