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Unformatted text preview: Rachel Golub 11/29/06 CHM 102 Lab Report Experiment 9: Solution Properties INTRODUCTION: Each day, we make use of the physical properties of materials around us. However, we often dont know why we use these particular chemicals or what chemistry is actually involved. Modifying the temperature of phase changes are examples of changing the Colligative Properties of a solution. They contain 2 or more components. The primary component is called the solvent, while the other components are called the solutes. In this lab, I will study how varying the concentration and type of a salt affects the boiling point of a solution. I will also be determining K b , the boiling point elevation constant for water. EXPERIMENTAL DATA: PART I: To start the experiment, 100mL of distilled water was poured into a 250mL beaker. Solid sodium chloride (NaCl) was added to the beaker. The beaker was then labeled, as to not mix up the multiple beakers used in the experiment. 100mL of distilled water was poured into another 250mL beaker. Solid calcium sulfate (CaSO 4 ) was added to the beaker, and then labeled. Less of the calcium sulfate was added than with the sodium chloride. I looked at both solutions and recorded my observations in my lab sodium chloride....
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- Fall '06