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Find out the correct statement(s) with r...

Find out the correct statement(s) with respect to following transition C (Diamond) → C (Graphite) , ΔH = - 1.6 kJ

A

Diamond is exothermic substance

B

Graphite is endothermic substance

C

Graphite is more stable than diamond

D

Both (1) & (2)

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The enthalpy change for chemical reaction is denoted as DeltaH^(Theta) and DeltaH^(Theta) = H_(P)^(Theta) - H_(R)^(Theta) . The relation between enthalpy and internal enegry is expressed by equation: DeltaH = DeltaU +DeltanRT where DeltaU = change in internal enegry Deltan = change in number of moles, R = gas constant. For the change, C_("diamond") rarr C_("graphite"), DeltaH =- 1.89 kJ , if 6g of diamond and 6g of graphite are seperately burnt to yield CO_(2) the heat liberated in first case is