Saved Bookmarks
| 1. |
Explain the above vaiation in solubility with respect to temperature for selective compounds. |
|
Answer» Solution :the solubilities of ammonium NITRATE CALCIUM chloride ceric sulphate nano-hydrate and sodium chloride in water at different temperature are given in the following graph. The following conclusions are drawn from the above graph. (i) The solubility of sodium chloride does not vary appeciable as the maximum solubility is achieved at normal temperature .In fact there is only 10% increase in solubility between `0^(@)"to " 100 ^(@) C ` (ii) The dissolution process of ammonium nitrate is ENDOTHERMIC ,the solubility increase steeply with increase in temperature. (iii) In the case of ceric sulphate the dissolution is exothermic and the solubility decrease with increase in temperature. (iv) Even though the dissolution of calcium chloride is exothermic the solubility increases moderately with increase in temperature .Here the entropy factor ALSO plays a signicant role in deciding the position of the equilibrium. |
|