Magnesium Chloride And Hydrochloric Acid

b) Iron and Barium were present in unknown 3. Assigned unknown reacted with all 4 reactants and formed precipitate with 3 of them (Sodium carbonate, sodium hydroxide and Sulfuric acid). During the experiment it reacted very similarly to Iron (III) nitrate and Barium nitrate. For example, with it was tested against Ammonium Chloride, the color of the solution changed to a light green, very identically to Iron (III) nitrate and Ammonium Chloride. Besides, unknown 3 formed an orange brownish precipitate when it was tested with sodium carbonate. Iron (III) nitrate acted similarly. Moreover, unknown 3 reacted similar to Barium nitrate when it was tested against ammonium chloride and sulfuric acid. It did not form any precipitate with ammonium chloride but formed a very light white precipitate, which is identical to barium nitrate’s reaction against sulfuric acid. Therefore, the two present metal in unknown 3 are Iron and barium.

c. All the formulas of the oxides formed by the alkaline earth metals and lead

Many signs show that a chemical reaction has occurred. Some ways we know there is a chemical reaction are the formation of gas, formation of precipitate, change in temperature, and,or change in color. In part one of the experiment, we know there was a chemical change because of the formation of the white precipitate. We poured the ammonia and water in the flask with alum and water, forming a white, cloudy substance in between the two liquids. The white, cloudy substance between the two is liquids is also known as aluminum hydroxide. The second part of the experiment was very similar to the first, but in the second part we mixed epon salt, water, and ammonia. The precipitate formed from mixing the epson salt, water, and ammonia was called magnesium hydroxide.

A topic of great importance to all scientists is the identification of compounds, which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air, it is very prevalent in the science world. In project 2, identification of cations and anions was preformed through a series of confirmation and elimination tests that ultimately led to identifying an unknown ionic compound made of cations and anions.

Although this is true, once we discovered that the chloride ion was present within our compound, we could structure our tests so that they gave us results that could help us prove its existence. CONCLUSIONS/SUMMARY: The purpose of the experiments was to identify an unknown by figuring out both its chemical and physical properties. A series of tests were performed, a standard solubility test, a flame test, anion tests, cation tests, etc.

This information would be used in Part III to determine an unknown mixture with the results that were found in Part I. A singular drop of Pb(NO3)2 , Fe(NO3)3 , Ni(NO3)2 , AgNO3 , Ba(NO3)2 were added to the reagents: K2CrO4 , KSCN, NH4OH, DMG, HCl, H2SO4 inside of the glass spot plate. If a precipitate formed than the combination resulted in a change of color or appearance (results to these reactions are found in table 1.1). Part II included using the same procedure as done in Part III except this sample contained 1 mL of all five metal ions. This was meant to be a practice round to understand the different steps and procedures. Unfortunately, due to time concerns this trial was cut short at step 3.

Introduction: The purpose of this lab was to find the relative solubilities of some salts of the Alkaline Earths and use that information to find the order which they appear in the periodic table; also use that information to efficiently find an unknown alkaline earth halide. Also to find the relative oxidizing powers of the Halogens given and using that information finding the order of the Halogens in the periodic table; also use that information to efficiently find an unknown Halogen.

Aim: To discover how the three groups of elements react with water and oxygen and the relationships and reaction similarities between the three groups.

The purpose of this experiment is to establish the most efficient way to identify an unknown alkaline earth cation and an unknown halide anion based on observations of various precipitation and redox reactions. These observations are dependant on whether or not a precipitant formed or there was a color change. Both of these indicate a reaction has taken place. The alkaline earth metals are barium, beryllium, calcium, magnesium, radium, and strontium. And the halogens are fluorine, chlorine, bromine, iodine, and astatine.

1) Calcite and halite share many similarities such as being white to transparent, having three cleavage points, and also has roughly the same hardness (calcite has a hardness of three whereas halite has a hardness of 2.5). However, there are also some ways to differentiate between the two. One way to do this, although it is not highly recommended to do this without proper identification, is to taste it. Halite has a salty taste since it is salt. Another way to know what mineral is calcite and which mineral is halite is by looking at their cleavage points. Calcite has rhombohedral cleavage planes (75°) while Halite has a cubic cleavage point (90°).

Purpose To examine the effect of H2SO4 on different percentage combinations of Zinc and Magnesium Hypothesis If more Magnesium is present, the reaction between H2SO4 and a combination of Magnesium and Zinc will reach a higher maximum temperature, because of the properties of Group 2 metals compared to that of transitions metals. Background The difference in properties between Group 2 metals and transition metals establish the basis for this experiment. Group 2 metals have two electrons in the valence shell, which allows them to lose electrons faster than transition metals. This flexibility is expressed through the Magnesium in this experiment.

1660 – Robert Boyle defined elements and compounds, which are the basis of the periodic table.

Another description for sodium is it is a metal and is very explosive and has a white sort silver kind of outer colour and the the inside also looks the same. What makes Sodium an alkali-metal is the major amount of potassium, sodium, and lithium which all react very crazy with air and water. If you were to go to a periodic table then you would see that the element sodium is found in group one and period three of the periodic table. The main reason for why sodium is located where it is on the periodic table is because of the way that the electrons are configured or located on the periodic table. Another reason for why sodium is located where it is on the periodic table is because of all elements in the

In part “C”, four compound, plus the Cobalt Chloride mentioned above were tested for deliquescence, and efflorescence. Only one compound turned about to be efflorescent, which means that it lost water, which was Sodium Carbonate. The compounds mass before sitting out was 50.645g, after being exposed to the conditions of the laboratory for an hour, the sample weight 50.603g losing approximately 0.042g over the period of an hour. The Calcium Chloride

Identify two other triads which were identified during the early construction of the Periodic Table.