Short Answer TypeCalculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C.
Heat capacity at constant pressure is greater than heat capacity at constant volume. Why?
Long Answer TypeShort Answer TypeLong Answer TypeComment on:
(i) ∆U is –ve for exothermic reactions and
(ii) ∆U is +ve for endothermic reactions.
Short Answer TypeGive the points of difference between exothermic reactions and enodthermic reactions.
| Exothermic reactions | Endothermic reactions |
| 1. In such reactions, heat is evolved | 1. In such reactions, heat is absorbed. |
| 2. ∆H has –ve value. | 2. ∆H has a +ve value. |
| 3. ∆U has a –ve value. | 3. ∆U has a +ve value. |
Long Answer Type
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