Home
Class 12
CHEMISTRY
Calculate DeltaS("total") and state whet...

Calculate `DeltaS_("total") and state whether the reaction is spontaneousor nonspontaneous at `25^@C`.
`HgS (s) + O_2(g) to Hg(l) + SO_2(g)`,
`DeltaH^0 = -238.6 kJ,DeltaS^0 = + 36.7 J K^(-1)`

Text Solution

Verified by Experts

`DeltaS_("surr") = - (DeltaH^0)/T`
`= ((-238.6 kJ))/(298 K)`
` = + 0.8007 kJ K^(-1) = + 800.7 JK^(-1)`
`DeltaS_("total") = DeltaS_("sys") + DeltaS_("surr")`
`=+36.7 JK^(-1) + 800.7 JK^(-1)`
` = + 837.4JK^(-1)`
`DeltaS_("total") gt 0, the reactionis spontaneous at `25^@C`.
Promotional Banner

Similar Questions

Explore conceptually related problems

CaIculate AStotal and state whether the reaction is spontaneous or non-spontaneous at 25^@C . HgS(s) + O_2(g) rarr Hg(I) + SO_2(g)DeltaH^@ = -238.6 kj, DeltaS^@ = + 36.7J K^(-1) .

Determine DeltaS_(Total) and decide whether the following reaction is spontaneous at 298 K. Fe_2O_(3(s))+ 3CO_((g)) rarr 2Fe_(s) + 3CO_(2(g)) DeltaH^@ =- 24.8 kj, DeltaS^@ = + 15 JK^(-1)

Determine whether the following reaction will be spontaneous or non-spontaneous under standard conditions. Zn_((s)) + Cu^2+_((aq)) rarr Zn^2+_((aq)) + Cu_((s)) DeltaH^@ = - 219 kj, DeltaS^@ =- 21 JK^(-1).

Determine whether the reactions with the following AH and AS values are spontaneous or non-spontaneous. State whether they are exothermic or endothermic: DeltaH =- 40 kj and DeltaS = + 135J K-1 at 300 K DeltaH = -60 kj and DeltaS = -160 JK-1 at 400K

The enthalpy change for the formation of 3.6 kg water is _____ . H_(2(g))+1/2 O_(2(g)) to H_2 O_((l)), Delta H=-284.5 kJ mol^-1