Unknown Ionic Compound Preliminary Lab

Unknown Ionic Compound Preliminary Lab intelligence of Results and Scientific ExplanationThe main goal was to identify the foreign confused, which was MgCl2, break dance known as Magnesium Chloride. Before knowing what the unknown was, we had some(prenominal) shield that needed to be d whiz in order to doctor the unknown intricate. To find the identity of the compound we did various experiments for example, we observed the fleshly properties, visitationed the qualitative and quantitative solubility, did a cation and anion washbasinvass and tested the conductivity of the compound.First we observed the unknown from its physical properties. It was white and had a clumsy and grainy feel to it. It was also observed as a warm and did not have a smell. All of these properties suggest that the compound was loft because ionic compounds do not have a distinct spirit and atomic number 18 solid at room temperature because of their high melting points. The unknown compound was the n tested for solubility in piddle, toluene and acetone. The compound was soluble in water system, indicating the compound was either a polar or an ionic compound, and not as soluble in toluene or acetone which points to the compound being more ionic. erstwhile finished sight the unknown, we tested for pH. To do this, we the unknown with water and used litmus melodic theme to determine whether it was an acid, base, or neutral. The litmus base showed us that the unknown had a pH of 7, so it is a neutral compound.We then tested the conductivity. To do this we test the solution with a voltmeter in order to determine whether or not the compound can withstand water when it is released. If the compound was to be conductive in water, it would dissolve and then produce an electric current. one time the compound was dissolved, it was then tested with a voltmeter that produced a voltage of -0.20 volts. This is strategic information because it shows that the compound was ionic since only ionic compound dissolve in water and produce and electric current.During the quantitative testing, 20.521 grams of unknown was miscellaneous with 17 mL of water and that was then put into an Erlenmeyer Flask and stirred. It was left field for one week to see if it would dissolve or have either change at all. Once checked, there was no headlong, so we performed the test again. This time we used 19.085 grams of unknown and mixed that with 10 mL of water and we are currently in the process of waiting for the results. Checking the mixture to begin with leaving, it seemed to be showing some type of precipitate, so we are hoping that this test works better than the first.Next to determine one of the elements within the compound we tested for anions and cations. First we tested for cations and in order to do this we performed a flame test and an ammonium test. To start the flame test, the nichrome wire had to be cleaned by heating it over a flame to ensure our results are not contamin ated. A solution of water and the element was used to tail end the nichrome wire in, and then the nichrome wire is placed into the flame. If the flame produces a colouration it is indicative of a certain metalloid ion or metal. A annotate is produced in the flame when the heat of the flame changes the metal ions into atoms, which then beget excited and produce light that can be seen with the naked eye. Once we tested the unknown in the flame to, it was determined that there was no color change, which lead us to believe that our unknown has to be a compound with Magnesium. 1 mL of the unknown solution was placed into a test tube and 1 mL of NaOH (6 M) was added. A pH opus was placed on a watch glass using water to help it stick. The watch glass was placed on the top of the test tube. If ammonium is present, the water will dissolve resulting in a higher(prenominal) pH.Going into next lab, we will finish up the quantitative testing. To do this, we will use a process called vacuum filtration. This is done by pouring the mixture of the unknown and water through filter paper and letting the water drain into a funnel and hoping that a precipitate is presents and is collected on the filter paper.ConclusionAlthough this process takes time and can be confusing at time, it is very simple to do. Figuring come in how to determine the unknown with the test preformed here was difficult at one point, but in the end, the test(s) showed that Magnesium Chloride was the unknown solution.