Saved Bookmarks
| 1. |
The enthalpy of tetramerization of X in gas phase `(4 X(g) to X_(4)(g))` is -100 kJ/mol at 300K. The enthalpy of vaporisation for liquid X and `X_(4)` are respectively `30kJ//mol` and `72kJ//mol` respectively . `DeltaS` for tetramerization of X in liquid phase is - 125J/K mol at 300K. What is the `DeltaG` at 300n K for tetramerization of X liquid phase ?A. `- 52 kJ//mol`B. `- 89. 5 kJ//mol`C. `-14.5 kJ//mol`D. None the these |
|
Answer» Correct Answer - C `" "4X(l) " "to" "X_(4) (l)" " DeltaS = - 0.125 kJ` `" "4X(l) " "to" "X_(4) (l)" " DeltaH = ?` `(i) " "4X(l) " "to" "X(g)" " DeltaH = 120` `(ii) " "X_(4)(g) " "to" "X_(4)(l)" " DeltaH = -72` `(iii) " "4X(g) " "to" "X_(4)(g)" " DeltaH = -100` ` " "4X(l) " "to" "X_(4)(l)" " DeltaH = -52` ` " "DeltaG = -52 - 300 (-0.125) = -14.5kJ` |
|