½ mark 10 Outline the reaction pathway to produce propanoic acid from propane. Write the chemical reactions (using chemical structures) indicating reactants and any special conditions. 2 marks 11 Name all the chemical species in Q10 using the IUPAC system. 1 mark 12 If you put the product formed in Q10 in a basic solution, what would the resulting ion look like? 1 mark 13a Indicate the chemical equation when your product from question 10 undergoes a
The absorption spectrum is measured using a spectrophotometer and the data is graphed in Excel. The peak of the line is used to find Vmax of Fe2+. Vmax is used to find the moles of Fe2+ and ligand. The unknown n is a ratio of moles ligand divided by moles Fe2+. Results and Discussion For the first part of the experiment (Part A), five different 100 mL volumetric flasks were each filled with 1,2,3,4 and 5 mL of iron (II) solution.
Conclusion 10 Grams of Potassium chlorate when decomposed produces 3.915576 grams oxygen gas and 6.083363 grams potassium chloride Atomic Weight of Magnesium Introduction In this lab we will determine the atomic weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacts with magnesium. The reaction is as follows: Mg + 2HCl -> H2 + Mg2+ (aq) + 2Cl- (aq) There is a one to one relationship between the number of moles of hydrogen gas evolved and the
The net reaction is: This reaction has been studied extensively and occurs for a wide variety of ketones. In general, the halogenations of a ketone can be represented as follow: The main evidence for any mechanism is provided by kinetic studies to determine an experimental rate law. Following the rate law of chemical kinetics, the differential rate equation for the reaction could be written as follow: Where k = rate constant; a, b,c are the orders of the reaction of S, I3-, and H+ respectively. I3- ion is the only coloured species in the reaction mixture, a spectrophotometer can is used to measure the change in its concentration, by applying the Beer-Lambert Law Where A= absorbance, ε= molar absorption coefficient, [I3-]= concentration and /= optical path length, that is, the distance travelled by the light through the solution. The ideal wavelength for the measurement of
5.04H: Gas Stoichiometry Lab Worksheet Name: _________________________ Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. (5 points) Data Table| Mass of magnesium strip (grams)|0.0304g| Volume of gas collected (mL)|10ml| Barometric pressure (atm)|1.1| Room Temperature (°C)|21 | Vapor pressure of the water (torr)|18.7| Calculations: 1. Write the balanced equation for the reaction conducted in this lab, including appropriate phase symbols. (2 points) Mg(s) + 2 HCl(aq) → H2(g) + MgCl2(aq) 2.
The 337 nm pulse laser excites the 1-pyrenemethylamine while the oscilloscope measures the light intensity being emitted from the sample over time. Results and Discussion Figure 2: Absorption spectra of 1-pyrenemethylamine in various
Atoms with the same number of protons but different numbers 1. Radiation deflected toward the positively charged plate Compare and contrast each pair of related terms. l j m k h i f b c a e d g 2. 78 protons Column A Date Use the periodic table to identify each element described below. Match each definition in Column A with the term in Column B.
Discussion and Conclusion In this experiment, the bromination of an alkene will be observed and a mechanism to account for the occurrence distribution of the products will be determined. In the first part of the experiment the 0.9 grams of E-stilbene will be put in a flask with 10ml of dichloromethane and then stirred to affect dissolution of the E-stilbene, since dichloromethane is a nonpolar solvent which can dissolve the nonpolar alkene. After the E-stilbene has been dissolved, 5ml of bromine in dichloromethane will be added, which will be stirred for thirty minutes until the solution is white, to ensure that the reaction has gone to completion. Bromine in dichloromethane is used because dichloromethane works as a good solvent for bromination reactions, due to the fact that it doesn’t react with bromine or most other organic molecules. The reddish color of bromine is discharged upon addition to an alkene as the bromine reacts, making this reaction a useful qualitative test for unsaturation when the reaction has gone to completion.
As aforementioned, the main objective of this lab is to determine whether or not the unknown sample is in fact chromium. In order to do so, the experimenter has a limited list of chemicals to use, which include: * Iron (III) Nitrate, Solid * Chromium (III) Nitrate, Solid * 1.00 M Hydrochloric Acid Solution * 4 M Sodium Hydroxide Solution * Zinc Metal The experimenter also has access to unlimited use of: * Standard lab equipment and glassware * MeasureNet temperature probe * MeasureNet pH probe and drop counter * MeasureNet spectrophotometer and Curvettes In this experiment, the experimenter will utilize various skills learned from previous labs in order to conduct the experiment in a productive and efficient manner. For instance, Chemical reactions will be utilized in order to separate the mixed unknown sample into its various components. One must know that the driving force behind double displacement reactions is the removal of ions, and one must also know that a precipitation reaction is used when two aqueous solutions of ionic compounds are mixed, and a solid is formed. Another example of students using knowledge from a previous experiment is when the experimenter must perform an emission analysis on the remaining aqueous Chromium
Using the Flame Test to Prove Different Colors of Light are Emitted as the Electrons Move from an Exited State Back to a Ground State 1. Introduction / Purpose (5 points) According to Mr. Darrell Ebbing and Mr. Steven Gammon (2013, p. 273) Albert Einstein “reasoned that if a vibrating atom changed energy, from 3hv to 2hv, it would decrease in energy by hv and this energy would be emitted as a quantum of light energy.” The reasoning was based on “Mr. Max Planck’s work on Quantization of Energy (Ebbing & Gammon, 2013, p. 273)”. In this experiment, this reasoning will be tested by taking small amounts of four different salts that contain metal, Sodium Chloride (NaCl), Potassium Chloride (KCl), Lithium Chloride (LiCl), and Barium Chloride (BaCl_2), and heating them using the flame of a Bunsen burner. As Model Science (2011) explains, the experiment will show that as the salt with the metal is “burned, the electrons will be excited (i.e., move to another energy level) and as these electrons fall back from one energy level to another, they will emit photons of light.