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.
2 marks 4 Draw the structural formula of Compound G. 1 mark 5 Using the chemical shift correlation for 13C NMR, predict the number of peaks for Compound G and draw in the position of the peaks on the blank spectrum below, annotating each peak with its corresponding structure. (2 marks) 6 Draw the structural formula for 2-chloro but-2-ene. Below this draw a structural formula of an isomer of 2-chloro but-2-ene and name this substance.
The distance between the forces is given by the Coulombs law through the use of the formula F=kq1q2/r2.0.1newtons = 8.99*109*3.2*10-6*7.7*10-7/r2 R= 555.78 Answer to question 3 • Potential difference between the two plates is equal to velocity which is equal to 6.0*106m/s • Force = mass *acceleration = 1.4*10-13*6.0*106 = -8254 nektons The speed of the particles are computed by the formula V=ED. This is equal to 8.5*10-6*0.15. This is equal to 84.1 Answer to question 4 Voltage = current *resistance. This implies that in this case while V is 5.0 and resistance is 1.0*103, current will be equal to 5/1.0*103, = 500 amps B the direction of the conventional current provides the electric charge movement from the positive side of the battery to its negative side as in indicated in the diagram below Answer to question 5 • This section focuses on the equivalent resistance of a circuit. The equivalent resistance will be equal to (5.0*102+1.00*103)2.
EXPERIMENT 6 Title Kinetics of Chemical Reaction – Iodination of Cyclohexanone Aim To determine the value of the rate constant, k and order of reaction, a, b and c, and also to suggest a mechanism which agrees with the rate equation that has been obtained. Background Theory The basis of the theory of absorbance is as follows: Io ―――――→ sample ―――――→I if Io = I, no absorbance occur Io > I, the sample absorbs certain amount of light wave Io < I, the sample emits certain amount of light of certain wave length. THE HALOGENATION (IODINATION) OF KETONES (CYCLOHEXANONE) This experiment examined the rate of iodination of cyclohexanone in an aqueous medium. To increase the amount of iodine in the solution, iodine is converted to a more soluble complex ion, I3- by the addition of excess iodide ion: I2 + I- →I3- One of the characteristic reactions of ketones is the substitution of a halogen for one of the hydrogen is adjacent to the ketone group. The net reaction is: This reaction has been studied extensively and occurs for a wide variety of ketones.
Objectives: The purpose of this lab is to observe the reaction of crystal violet and sodium hydroxide by looking at the relationship between concentration and time elapsed of the crystal violet. CV+ + OH- CVOH To quantitatively observe this reaction of crystal violet, the rate law is used. The rate law tells us that the rate is equal to a rate constant (k) multiplied by the concentration of crystal violet to the power of its reaction order ([CV+]p) and the concentration of hydroxide to the power of its reaction order ([OH-]q). Rate = k[CV+]p[OH-]q To fully understand the rate law, concentrations of the substances must be looked at first. The concentration is measured in molarity.
For the first procedure, we increased the frequency until we found resonance, and recorded frequencies and nodes to calculate wavelength. We did this for first harmonic through fourth harmonic, and then found the velocities using our measurements. In the first harmonic phase, our signal generated frequency was 36±1 Hz, wire frequency was 72 Hz, the number of nodes was 2 and the wavelength was 1.200 m. This was found by using the equation λ=2L/n. For the second procedure, using a wire of a certain linear mass density we found the frequency of the wire as it oscillated in its fundamental mode, or lowest resonance mode, as we increased the tension by moving the hanging mass to a higher notch. We performed this procedure again using a wire with a different linear mass
It is an example of a pericyclic process. Two double bonds disappear and reappear between two atoms that used to share a single bond. Two new single bonds form. This reaction proceeds via a transition state. Electron donating substituents attached to the diene, accelerate the reaction as do electron withdrawing groups on the dieneophile .
In this lab you will use a method called visible spectroscopy to determine the concentration of a solution of CoCl2. This method relies on the fact that colored solutions will
4. By law, company Q must have an M concentration of 3.00 x 10-4 mol/L +/- 5%. In other words, the M concentration must be between 2.85 x 10-4 mol/L and 3.15 x 10-4 mol/L. Does Batch 021015 meet legal requirements? Part II: Colorimetry of FD & C Blue # 1 Dye (Brilliant Blue FCF) Discussion and Review: In this part of the experiment, we will use a color standard calibration system to determine the concentration of an unknown solution.
It is concluded that these are the three ingredients in a tablet of Excedrin. By using the line equation and the calculations represented in appendix A, this is how much of each ingredient is in an Excedrin tablet. References: 1. Williamson, Kenneth L., and Katherine M. Masters. Macroscale and Microscale Organic Experiments.