ΔH 계산. 2H2O2(l) → 2H2O(l) + O2(g)

ΔH 계산. 2H2O2(l) → 2H2O(l) + O2(g)

생성 엔탈피로 반응 엔탈피 계산

 

 

Change in enthalpy for reaction

2H2O2(l) → 2H2O(l) + O2(g)

If heat of formation of H2O2(l) and H2O(l)

are –188 and –286 kJ/mol respectively.

 

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▶ 참고: 표준 생성 엔탈피, ΔH°_f

[ https://ywpop.tistory.com/4416 ]

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생성 엔탈피로 반응 엔탈피 계산

ΔH°_rxn = [생성물들의 ΔH°_f 합] – [반응물들의 ΔH°_f 합]

( 참고 https://ywpop.tistory.com/3431 )

 

= [2×ΔH_f(H2O,l) + ΔH_f(O2,g)] – [2×ΔH_f(H2O2,l)]

= [2×(–286) + 0] – [2×(–188)]

= –196 kJ

 

 

 

답: –196 kJ