Answer to Question #307713 in General Chemistry for grey tyrant

Question

Using the solubility curve answer the following question:

1. Which substance in the most soluble? ________________________________

2. Which substances increase its solubility through decrease in temperature? ______________

3. Which substance is least affected by an increase in temperature? ___________________

4. What is the solubility of KNO3, KCl, and Pb(NO3) at 40oC

_________________ _____________________ ______________________

Answer 1

The solubility of a substance is the amount of that substance that is required to form a saturated solution in a given amount of solvent at a specified temperature. Solubility is often measured as the grams of solute per 100 g of solvent. The solubility of sodium chloride in water is 36.0 g per 100 g water at 20°C. The temperature must be specified because solubility varies with temperature. For gases, the pressure must also be specified. Solubility is specific for a particular solvent. We will consider solubility of material in water as solvent.