At 298 K , `DeltaH_("combustio")^(@)` (sucrose) `= - 5737 KJ//mol & DeltaG_("combustio")^(@) ("sucrose") = - 6333 KJ//mol`. Estimate additional non- P
At 298 K , `DeltaH_("combustio")^(@)` (sucrose) `= - 5737 KJ//mol & DeltaG_("combustio")^(@) ("sucrose") = - 6333 KJ//mol`.
Estimate additional non- PV work that is obtained by raising temperature to 310 K,
Assume `Delta_(r) C_(p)= 0` for this temperature change
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Correct Answer - `24 kJ//mol`
`at" "298 K`
`DeltaG_(1)^(@) = DeltaH^(@) = TDeltaS^(@)" "...........(1)`
`DeltaS^(@) = (DeltaH^(@) -DeltaG^(@))/(T_(1))`
` = - 2 KJ// mol- K`
`at " " 310 K`
`DeltaG_(2)^(@) = DeltaH^(@) - T_(2) DeltaS^(@)" "..........(2)`
`(because Delta_(r) C_(p) =0 " " thereforeDeltaH_(2) = DeltaH_(1) & DeltaS_(2) = DeltaS_(1))`
`DeltaG_(2)- DeltaG_(2)^(@) = (T_(2) - T_(1)) DeltaS^(@)`
`= + 12 xx 2 = + 24 KJ//mol`
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