1.

Calculate the standard enthalpy or comustion of CH_(3)COOH_((l)) from the following data: Delta_(f)H^(@)(CO_(2))=-39383 KJ "mol"^(-1) Delta_(f)H^(@)(H_2O)=-285*8 KJ "mol"^(-1) Delta_(f)H^(@) (CH_(3)COOH)=-483*KJ"mol"^(-1)

Answer»

SOLUTION :`CH_(3)COOH+2O_(2) to 2CO_(2)+2H_(2)O Delta H_(2)= ?`
`2(Delta H_(f)CO_(2))+2(Delta _(f)H_(2)O)-Delta _(f)HCH_(3)COOH=Delta H_(E)`
`=2xx393.KJ//"MOL"+2xx-285*8 KJ//"mol"-(-483*2KJ//"mol")`
`=-786*6-577*6+48*3`
`=-875*0 kJ//"mol"`


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