Which among the following is not true about the solubility of a solid in water? - the solubility is not affected by pressure. - solid crystallizes when a saturated solution is prepared at a higher temperature and then cooled. - a saturated solution prepared at a lower temperature becomes unsaturated when heated to a higher temperature. - the solubility generally increases as temperature increases. - none of the above

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)