InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Read following statement(s) carefully and select the right option : (I) The enthalpy of solution of `CaCl_(2). 6H_(2)O` in a large volume of water is endothermic to the extent of 3.5 kcal/mol. If `DeltaH=-23.2 " kcal"` for the reaction, `CaCl_(2)(s)+6H_(2)O(l)rarrCaCl_(2).6H_(2)O(s)` then heat of solution of `CaCl_(2)` (anhydrous) in a large volume of water is - 19.7 kcal/mol (II) For the reaction `2Cl(g)rarrCl_(2)(g)`, the sign of `DeltaH` and `DeltaS` are negative.A. Statement I and II both are wrongB. both are correctC. only I is correctD. only II is correct |
|
Answer» Correct Answer - B `CaCl_(2)(s)+aqrarrCaCl_(2)(aq)+q` `(CaCl_(2)(aq)+6H_(2)O(l)rarrCaCl_(2).6H_(2)O(s)+23.2)/(CaCl_(2)(s)+6H_(2)OrarrCaCl_(2).6H_(2)O(s)+q+23.2)` `3.5 = q + 23.2` `q = - 19.7` (II) 2 Cl (g) `rarrCl_(2)(g)` `DeltaH=-ve, DeltaS=-ve`. |
|