①自来水 ②食醋 ③淀粉 ④食糖 ⑤碘化钾试纸 ⑥碘酒.
C(s)+O2(g)=CO2(g)△H1=﹣393.5kJ/mol
CH3COOH(l)+2O2(g)=2CO2(g)+2H2O(l)△H2=﹣870.3kJ/mol
H2(g)+ O2(g)=H2O(l)△H3=﹣285.8kJ/mol
2C(s)+2H2(g)+O2(g)=CH3COOH(l) 的反应热△H(焓变)为( )
① (g)+H2(g)⇌CH3CH2CH2CH3(g)△H1
② (g)+H2(g)⇌CH3CH2CH2CH3(g)△H2