Post-Laboratory Questions (Use the spaces provided for the answers and additiona
ID: 558934 • Letter: P
Question
Post-Laboratory Questions (Use the spaces provided for the answers and additional paper if necessary.) 1. Define the solubility of a substance. 2. Convert your experimental solubility of KHT (in mol L-) to g KHT per 100 mL. Compare this solubility to the literature value, obtainable from a chemistry 3. Given the following solubility vs.temperature data for two compounds, answer the questions below. Compound A 25.0 26.7 30.8 41.7 48.0 63.0 solubility, mol L-1 Compound B temperature, "C solubility, mol L-1 (1) On graph paper, plot solubility vs.tempera- (2) Which compound's solubility is more affected 5.60 5.81 6.23 6.46 6.717.27 25.0 38.6 43.4 49.0 52.0 56.2 60.0 67.2 3.54 6.28 7.178.37 9.13 10.0 11.2 12.6 ture for both compounds on one set of axes. Pe to cle_ le s-a- by changes in temperature? Explain.Explanation / Answer
1. The amount of a substance that will dissolve in a given amount of solvent is defined as the solubility of that substance. The substance is called solute and the substance in which it is dissolved is called solvent.
Solubility depends on the physical and chemical properties of both solute and solvent. It also depends on temperature, pressure and the pH of the solution.