Potassium Trisoxalatoferrate Lab Report

For this study, all of the protocol was found in the Western Kentucky University Biology Department Lab Manual in labs two through five. The very first step in this series of experiments was to discover whether or not PTC was tasted or not. By using a control and a strip of PTC paper, I compared the taste to determine if I tasted the PTC or not. Then, all the data obtained by the class was combined in order to determine whether the class was in accordance with population genetics hypothesis of 70% being tasters, rejecting/failing to reject the second hypothesis. Using the chi-squared test, it was determined whether the deviation of the data was by chance or was due to other factors.

If Na undergoes a chemical reaction with Cl, and if K undergoes a chemical reaction with I, what can you say about all the elements that belong to these 2 different families (families from questions 3 and 4)?

Filling a test tube with the same solution, and using it we will cover the other end of the funnel facing upwards.

Triton is the largest satellite that orbits the planet Neptune. The surface of Triton is riddled with cryovolcanoes that emit volatiles such as water, ammonia, or methane, instead of the molten rock that volcanoes on Earth emit. It has an atmospheric pressure of 14 μbar (1/70,000th of Earth’s surface pressure) and a gravitational constant of -0.779 m/s2. The average surface wind speeds are 5-15m/s, and the average temperature is 35 K.

Chemistry is composed of many molecules and changes of properties in the matter of science. The elements on the periodic table arranged from metal to non metals, plays an important role when it comes to making a compound and mixture. Each of the element have their own unique atomic mass which matters when it comes to organizing the periodic table and when there is a calculation. There are lots of importance about the atomic mass of each element that will be discussed later in this essay. An experiment performed using the mass of zinc and copper has determined whether which element have excess remaining. Will there be a difference if an alkali metal was used?

CH 204 – Introduction to Chemical Practice Experiment #1 – Qualitative Analysis of Cations Anam Zaki* Baylee Halliwell TA: Jiawei (Will) He February 16, 2016 RESULTS & DISCUSSION The purpose of this experiment was to use qualitative analysis in order to identify two cation in a solution. During the first part of the experiment, the identity of either silver or lead was revealed, and during the second part, the identity of either calcium or barium was discovered. For the last part of the experiment, many different cations were exposed when Cation Flame Tests were executed.

The purpose of this lab was to deduce the percentage of oxygen the measured amount of potassium chlorate, 1.56g. We put potassium chlorate in a crucible, and heated the crucible to burn off the oxygen in order to create potassium chloride. We found the difference of the mass of the crucible with and without the potassium chlorate first. After that, we used our data to calculate the percentage of oxygen in the potassium chlorate, which was 37.2%.

Potassium was discovered by Humphry Davy. Potassium is in group 1 and period 4. The atomic number for Potassium is 39.098. The main key isotope in potassium is 39K. A description on how potassium looks is its soft, and that it ruins in the air within minutes. The uses that Potassium uses are detergent, liquid soap, manufacture glass, saline drops, and found in some foods. A lot of potassium salts are really important to these elements nitrate, carbonate, chloride, bromide, cyanide, and sulfate. Potassium is really important to those elements because if potassium is not in those elements then they won’t be a full element with it or they wouldn’t be the element that they are with potassium in it. Potassium salts, alum, and potash were all use in gunpowder, dyeing, and soap making. Potassium and the other two elements used to get scraped from walls of latrines, manufacture sulfuric acid and mold clay, and collected the wood ash respectively.

All chemicals and reagents were obtained from Sigma (Sigma-Aldrich). A glycerolated Tris-lactose egg yolk extender was freshly prepared for dilution of semen as described by El-Bahrawy et al. (2006). Briefly, the extender was composed of 0.25 Molar Tris buffer (3.25 %, w/v), lactose (5.5 %, w/v), citric acid (1.67 %, w/v), glucose (1 %, w/v), and was further supplemented with egg-yolk (20 %, v/v) and glycerol (3 %, v/v) to reach a final pH of 7.4 and 0.351 osmol/kg osmotic pressure. The glycerolated diluent was added to the semen specimens in a one-step dilution technique.

The scientist investigated the compound 1,3,5-trisilacyclohexane which they assume to exist in chair conformer like cyclohexane. The Silicon atom in the compound has a lower in electronegative and much larger in radius compared to the Carbon atom of cyclohexane making the structure more flexible. The property of silicon atom in the compound also makes the C-Si bond larger and the C-Si-C bond smaller making the structure

The warm water was added to the dehydrated mixture of table salt, sand and the copper sulphate. The solution changed to a visibly blue homogenous colour. The sand and some of the copper crystals that did not dissolve remained at the bottom of the beaker. A small amount of copper sulphate residue was left in the collection funnel. The temperature of the solution was too high for the mixture to bind and recrystallize; Ethanol was added to the mixture to lower solubility. The beaker was then placed in a cooler for duration of 10mintues to decrease temperature and increase the rate of recrystallization. When the beaker was removed from the cooler it was still visibly blue indicating in was not a complete recovery. Recovered copper sulphate pentahydrate crystals were solid, multi edged and uniform in assembly. High level of purity.

Then, 3.5 mL of 1.7 M potassium oxalate solution were added to the beaker with the rinsed precipitate. This solution was warmed to about 40℃ and it was constantly stirred. The solution was then removed from the Bunsen burner, and

This mixture was stirred for 1 h and evaporated overnight to obtain the investigated complex. This formed solid investigated complex was filtered, wash and then dried in vacuo over anhydrous CaCl2. TLC is used for determining the purity of investigated complex by using silica gel G

The report presents determination of equilibrium constant for the formation of a complex ion FeSCN2+. This was accomplished using a colorimeter to measure absorbance of some known concentration solutions in order to generate the calibration curve. The equation of the graph was used to compute the equilibrium concentrations of the reactants and products, needed to calculate the equilibrium constant for the reaction.

can be considered equimolar and first order with respect to both sodium hydroxide and ethyl acetate, i.e., second order overall, within the limits of concentration (0-0.1M) and temperature (20-40°C) studied.