Lab Report Determining The Properties Of An Unknown

Introduction The purpose of this lab was to explore the properties of an unknown compound. An unknown was given and a cation flame test and anion test was performed to determine the identity of the compound. Once the identity was determined, the properties were explored.
Experimental
To determine the cation of the compound, a cation flame test was performed. A bunsen burner was lit until a medium blue flame was burning. The given unknown was scooped onto a nichrome wire loop. The wire was held in the flame to determine the cation. To compare the unknown’s flame color to a known cation’s flame color, a sample of known compound were taken to perform a flame test. The cation barium burned a pale green color at a low intensity. The cation calcium
Solubility is the amount of solid that can be dissolved in a certain amount of liquid at a certain temperature. In order for solubility to be tested, two trials were run. 5 mL of deionized water was measured and poured into a beaker. The temperature of the water was recorded. 2 grams of the unknown was measured out and placed into the same beaker as the deionized water. The unknown and water was then mixed well until the unknown was fully dissolved. Once the unknown was fully dissolved, small amounts of the solid unknown was then measured and mixed into the solution until the solution was either cloudy or had small amounts of solid unknown, unable to dissolved, at the bottom of the beaker. The solubility was then put into terms of moles per liter. Enthalpy change is the amount of heat that is released or absorbed in a chemical reaction at constant pressure. For enthalpy change to be calculated, 30 mL of deionized water was measured out and put in a coffee cup calorimeter. The initial temperature of the water was record. 1 g of the unknown was measured out. Fairly quickly, the unknown was added to the water and stirred. The LabQuest pad measured the change in the temperature of the water as the unknown was dissolved. Once 90 seconds had passed the heat trend was observed from the reaction. The enthalpy was calculated by using the formula, ∆H= c∙m∙∆T. The enthalpy change
The cation and anion tests tested the possible options for our unknown, and determined the identity of the unknown through elimination of the other options. After the unknown was identified as NaCl, the properties could be properly explored. In the MSDS for NaCl, there were no recorded environmental hazards. Although there was a note about how NaCl was an eye irritant. In the experiment, there were points were the data was inaccurate to known measurements. The solubility test was inaccurate because it was difficult to get an exact measurement. The conductivity may vary because it was challenging to create an exactly .1 M solution. Table salt can be collected in several different ways in mass production. A common way is taking ocean water and evaporating the water to reveal the sea salt. Table salt is used primarily in seasoning foods. To be absolutely sure of the identity of the unknown, the unknown was mixed with another reactant that was also soluble in water. For NaCl the following reactants were mixed, 3NaCl(aq) + K3PO4(aq) → Na3PO4(aq) + 3KCl(aq). In this reaction, the products are both soluble in water, to there was no precipitate left after the