The heat of transition (ΔHt) of graphite into diamond would be, where

C(graphite)+O2(g)CO2(g);  ΔH=xkJ

C(diamond)+C2(g)CO2(g);  ΔH=ykJ [Pb. PET 1985]

(1) (x+y)kJmol1

(2) (xy)kJmol1

(3) (yx)kJmol1

(4) None of these

Concept Videos :-

#38 | Solved Problems on Thermochemistry: Set 1
#39 | Solved Problems on Thermochemistry: Set 2

Concept Questions :-

Thermochemistry
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